Research    Teaching    Service

Research

   Biography 

Joon Ho Cho (S'00-M'01) received the B.S. degree (summa cum laude) in electrical engineering from Seoul National University, Seoul, Korea, in 1995 and the M.S.E.E. and Ph. D. degrees in electrical and computer engineering from Purdue University, West Lafayette, IN, in 1997 and 2001, respectively. 
   From 2001 to 2004, he was with the University of Massachusetts at Amherst as an Assistant Professor. Since July 2004, he has been with Pohang University of Science and Technology (POSTECH), Pohang, Korea, where he is presently an Associate Professor in the Department of Electronic and Electrical Engineering and the Director of Communication and Information Systems Laboratory. His research interests include wideband systems, multiuser communications, adaptive signal processing, channel measurement and modeling, and information theory.  
   Dr. Cho served as an Associate Editor for the IEEE Transactions on Vehicular Technology.

 Awards

  2010 POSTECHIAN Award in Teaching, Pohang University of Science and Technology. 

  Best Paper Award, 2009 Joint Conference on Communications and Informations, Korea Information and Communications Society.

  Contact Information               

LG Research Building #419
Department of Electronic and Electrical Engineering
POSTECH (Pohang University of Science and Technology)
San 31, Hyojadong, Namgu, Pohang, 790-784
Republic of Korea

Office) +82-54-279-2377
Fax) +82-54-279-2903
e-mail) jcho (at) postech dot ac dot kr

Office Hours: By appointment

  Research Interest               

The ultimate goal of communication theory is to serve designing better communication systems. I have my research focused on system optimization through performance analysis, of which main objectives are 

  1. to identify the key system parameters and 
  2. to understand how the parameters affect the system performance.  

  Publications   [Link to IEEE Xplore] [Link to IEEE Comsoc] (Pre-prints are available upon request.)

  Journals

(J27) J. H. Cho et al., ``A FRESH view on shift-invariant signal and pulse/quadrature amplitude modulation," in preparation. 

(J26) Y. H. Yun and J. H. Cho, ``Variable-rate optimal orthogonal overlay for fixed MIMO wireless link,'' in preparation. 

(J25) M. W. Kim and J. H. Cho., ``An alternate proof of uncertainty relations for shift-invariant analog signals," in preparation for submission to IEEE Trans. Inf. Theory.

(J24) Y. H. Yun and J. H. Cho, ``Optimal sequences and sum capacity of synchronous multi-code CDMA systems,'' in preparation for submission to IEEE Trans. Inf. Theory.

(J23)  Y. G. Yoo and J. H. Cho, ``Implementation of cyclic Wiener filter and linear pre-coder for cognitive overlay,'' in preparation.

(J22) J. H. Yeo and J. H. Cho, ``Optimal presence detection of linear modulated signal,'' in preparation.

(J21)Y. Y. Kang,  Y. H. Yun, and J. H. Cho, `Self-interference management in full-duplex amplify-and-forward relay,'' in preparation.

(J20) Y. H. Yun and J. H. Cho, ``A further generalization of Nyquist's theorem,''  in preparation.

(J19) Y. H. Yun  and J. H. Cho, ``Optimal signature waveforms and sum capacity of continuous-time overloaded CDMA systems,'' in preparation for submission to IEEE Trans. Inf. Theory.

(J18) J. H. Cho, B. W. Han, et al., ``Cyclic water filling for cyclostationary Gaussian noise channel: Part II--Applications to cognitive radio design,'' to be submitted to IEEE Trans. Commun.

(J17) B. W. Han and J. H. Cho, ``Cyclic water filling for cyclostationary Gaussian noise channel: Part I--Channel capacity,'' to  be submitted to IEEE Trans. Commun.

[J16] Y. G. Yoo and J. H. Cho, ``Asymptotically optimal low-complexity SC-FDE in data-like co-channel interference,'' accepted, IEEE Trans. Commun., 2010.

[J15] Y. H. Yun  and J. H. Cho, ``An optimal orthogonal overlay  for a cyclostationary legacy signal, '' to appear in IEEE Trans. Commun., vol. 58, no. X, pp. XXX--XXX, MONTH. 2010.

[DJ2] Y. H. Yun  and J. H. Cho, `An optimal orthogonal overlay for MIMO fixed wireless link,", The Journal of KICS (Korea Information and Communication Society), vol. 34, no. 10, pp. 929--936,  MONTH. 2009. [PDF]

---------------------------

[J14] J. H. Cho, ``Multi-user constrained water-pouring for continuous-time overloaded Gaussian multiple-access channels,''  IEEE Trans. Inf. Theory, vol. 54, no. 4, pp. 1437--1459, Apr. 2008. [Abstract][PDF]

[J13] J. H. Cho, Q. Zhang, and L. Gao, ``A comparison of frequency-division systems to code-division systems in overloaded channels,"  IEEE Trans. Commun., vol. 56, no. 2, pp. 289--298, Feb. 2008. [Abstract][PDF]

[DJ1] Y. H. Yun and J. H. Cho, ``Joint Tx-Rx optimization in additive cyclostationary noise with zero forcing criterion,'' The Journal of KICS (Korea Information and Communication Society), vol. 32, no. 7, pp. 724--729,  Jul. 2007. [PDF]

[J12] Q. Zhang and J. H. Cho , ``On RAKE receivers for ultra-wideband binary block-coded PPM in dense multipath channels,'' IEEE Trans. Vehi. Technol., vol. 56, no. 4,  pp. 1737--1748, July 2007. [Abstract] [PDF]  

[J11] Y. K. Jeong, J. H. Cho and J. S. Lehnert, ``An asymptotic analysis of band-limited DS/SSMA communication systems,'' IEEE Trans. Inf. Theory, vol. 52, no. 2, pp. 759- 766, Feb. 2006. [Abstract][PDF]

[J10] J. H. Cho and W. Gao, ``Continuous-time equivalents of Welch bound equality sequences,'' IEEE Trans. Inf. Theory, vol. 51, no. 9, pp. 3176--3185,  Sep. 2005.[Abstract][PDF]

[J9] M. Agarwal, L. Gao, J. H. Cho, and J. Wu, ``Energy Efficient Broadcast in Wireless Ad hoc Networks with Hitch-hiking,'' MONET (Mobile Networks and Applications) Special Issue on Energy Constraints and Lifetime Performance in Wireless Sensor Networks, vol. 10, no. 6, pp. 897 -- 910 , Dec. 2005. [Abstract][PDF]

[J8] J. H. Cho, Y. K. Jeong, and J. S. Lehnert, ``Linear suppression of wideband data-like interference in DS/SS communications,'' IEEE J. Sel. Areas Commun., vol. 23, no. 5, pp. 973--985, May 2005. [Abstract]  [PDF]

[J7] Y. K. Jeong, J. H. Cho, and J. S. Lehnert, ``Performance bounds for band-limited DS/SSMA communications with aperiodic random sequences,''  IEEE Trans. Commun.,  vol. 53, no. 1, pp. 131-141, Jan. 2005. [Abstract][PDF]   

[J6] J. H. Cho, ``Joint transmitter and receiver optimization in additive cyclostationary noise,'' IEEE Trans. Inf. Theory, vol. 50, no. 12, pp. 3396--3405, Dec. 2004. [Abstract] [PDF] 

---------------------------

[J5] J. H. Cho, Y. K. Jeong, and J. S. Lehnert, ``Average bit-error-rate performance of band-limited DS/SSMA communications,'' IEEE Trans. Commun., vol. 50, no, 7, pp. 1150--1159, July 2002. [Abstract] [PDF]

[J4] J. H. Cho and J. S. Lehnert, ``An optimal signal design for band-limited asynchronous DS-CDMA communications,'' IEEE Trans. Inf. Theory, vol. 48, pp. 1172--1185, May 2002.[Abstract][PDF]

[J3]  W. Gao, J. H. Cho and  J. S. Lehnert, ``Chip waveform optimization for CDMA systems with quadriphase modulation and random spreading sequences,'' IEEE Trans. Wireless Commun., vol. 1, no. 1,  pp. 37--45, Jan. 2002.[Abstract] [PDF]

---------------------------

[J2] J. H. Cho and  J. S. Lehnert, ``Blind adaptive multiuser detection for DS/SSMA communications with generalzed random spreading,'' IEEE Trans.  Commun., vol. 49, no. 6, pp. 1082--1091, June 2001. [Abstract] [PDF]

[J1]  J. H. Cho and  J. S. Lehnert, ``Performance of a  spatio-temporal  matched filter receiver for DS/SSMA communications,''  IEEE J. Sel. Areas Commun., vol. 18, no. 8, pp. 1505--1515, Aug. 2000. [Abstract][PDF]

  Conferences

J. H. Cho et al., ``Receiver design for binary UWB/MA communications with block-coded PPM in dense multipath channels," in preparation.

(C39) Y. Y. Kang and J. H. Cho, ``Constrained self-interference cancellation for full-duplex amplify-and-forward relay,'' in preparation.

(C38) Y. H. Yun and J. H. Cho, ``An extension of generalized Nyquist condition for zero interference,'' in preparation.

(C37) Y. H. Yun and J. H. Cho, ``Optimal sequences and sum capacity of synchronous multi-code CDMA systems,'' in preparation for submission to IEEE Globecom 2010.

[C36] Y. H. Yun and J. H. Cho, ``On sum capacity of continuous-time overloaded CDMA systems,'' to appear in Proc. ITA 2010.

[C35] Y. H. Yun and J. H. Cho. ``An orthogonal cognitive radio for satellite broadcasting system ,'' in Proc. of  PIMRC 2009. 

[C34] J. H. Yeo and J. H. Cho, ``Optimal presence detection of linear modulated signal,'' in Proc. of IEEE GLOBECOM 2009.

[C33] Y. Y. Kang and J. H. Cho, ``Capacity of full-duplex amplify-and-forward relay with self-interference,'' in Proc. of IEEE PIMRC 2009.

[DC8] Y. H. Yun and J. H. Cho, ``An optimal orthogonal overlay for fixed MIMO wireless link,'' in Proc. JCCI 2009. (Best Paper Award)

[C32] B. W. Han and J. H. Cho, ``Capacity of additive wide-sense cyclostationary Gaussian noise channel'', in Proc. ITA 2009. [PDF]

---------------------------

[DC7] D. S. Song and J. H. Cho,``Effect of random interleaver for faster-than-Nyquist transmission over AWGN channels,'' in Proc. of  KICS Conference Fall 2008. [PDF]

[DC6] J. J. Bae, Y. Y. Kang, and J. H. Cho,``Performance comparison of TD- and FD-SAGE algorithms in multipath MIMO channels,' ' in Proc. of  KICS Conference Fall 2008. [PDF]

[DC5] Y. Y. Kang and J. H. Cho, ``On performance evaluation of MIMO antennas through channel sounding," in Proc. of IEEK Summer Conference '08. [PDF]

[DC4] J. H. Yeo, Y. G. Yoo, and J. H. Cho, ``Power spectral density of block-transmitted signals for SC-FDE using cyclic prefix, zero padding, and unique word'', Cheju, JCCI '08. [PDF]

[C28] Y. Y. Kang,   S. H. Mo, and J. H. Cho, ``Joint ML estimation of channel and RF chain responses with noisy side information'', in Proc. IEEE WCNC'08. [PDF]

[C27] Y. G. Yoo and J. H. Cho, ``Asymptotically optimal LMMSE SC-FDE in additive cyclostationary noise'', in Proc. IEEE  ICC'08. [PDF]

[DC3] Y.G. Yoo and J. H. Cho, ``Asymptotic performance of LMMSE UW/CP SC-FDE,'' in Proc. 2007 Korea Signal Processing Conference (KSPC), Daegu, Oct. 15, 2007, p. 50. [PDF]

[DC2] S. H. Mo, Y. Y. Kang, and J. H. Cho, ``Calibrated   frequency-domain channel estimation  for indoor MIMO channel sounding,'' in Proc. 2007 Autumn Microwave & Radio Wave Conference, 13-14 Sep. 2007. [PDF]

[C26] Y. Y. Kang, S. H. Mo, and J. H. Cho, ``RMS delay spread vs. mean-square path gain for characterization of channel capacity,'' in Proc. IEEE RWS 2008. [PDF]

[C25] Y. H. Yun and J. H. Cho, "A design of optimal overlay system inducing zero interference to legacy systems," in Proc. IEEE GLOBECOM'07, Washington D.C., Nov. 26-30, 2007, pp. 1462 - 1466 . AbstractPlus | [PDF]

[DC1] Y. H. Yun and J. H. Cho, ``Joint Tx-Rx optimization in additive cyclostationary noise with zero forcing criterion'',  in Proc.  JCCI '07, 2-4 May, Pyeongchang, Korea. [PDF]

[C24] J. H. Cho, ``Joint transmitter and receiver optimization for continuous-time overloaded Gaussian multiple-access channels,''  in Proc. IEEE ICC'07, 24--28 June, 2007, Glasgow, Scotland. pp. 845 - 850
.  AbstractPlus | [PDF]

[C23] Y. G. Yoo and J. H. Cho, ``Asymptotic Equivalence of SC LMMSE-FDE to Continuous-Time LMMSE Equalizer,'' in Proc.  IEEE WCNC'07, 11--15 Mar. 2007, Hong Kong.pp. 1475 - 1480. AbstractPlus | Full Text: PDF [PDF]

[C22] J. H. Cho, ``Construction of continuous-time equivalents of Welch bound equality sequences,'' in Proc. 2006 International Symposium on Information Theory and Its Applications (ISITA), Seoul, Korea, 29 Oct. 29 - 1 Nov., 2006. [PDF]

[C21]  Q. Zhang, B. W. Han, J. H. Cho, and S. Wei, ``PAPR performance of IDFT-based uncoded OFDM signals with null subcarriers and transmit filtering,'' in Proc. IEEE International Conf. on Commun. 2006, Istanbul, Turkey, 11-15 June 2006. [PDF]

[C20] J. H. Cho, ``A continuous-time extension of Welch's lower bound on total squared correlation,'' in Proc. IEEE International Symposium on Informmation Theory (ISIT) 2005, Adelaide, Australia, 4-9 Sept. 2005, pp. 1908--1912. [Abstract] | [PDF]

[C19]  J. H. Cho and Y. K. Jeong, ``A design of optimal overlay system,'' in Proc. IEEE International Conf. on Commun., 2005, Seoul, Korea, May 16-20, 2005, vol. 1, pp.433-437 [Abstract] | [PDF]

[C18] J. H. Cho and Q. Zhang, ``Jointly optimum power and bandwidth allocation for multi-rate FDM and FDMA over overloaded channels," in Proc. IEEE GLOBECOM 2004, Dallas, TX, 29 Nov.-3 Dec. 2004, vol. 1, pp. 242--246. [Abstract] | [PDF]

---------------------------

[C17] Y. K. Jeong, J. H. Cho, and J. S. Lehnert, ``An asymptotic analysis of band-limited DS/SSMA communication systems,'' in Proc. IEEE International Symposium on Informmation Theory (ISIT) 2004, p. 434, Chicago, IL, June/July, 2004.[PDF]

[C16] J. H. Cho, ``Differential bandwidth and equivalent bandwidth for overloaded multiuser communications," in Proc. IEEE International Symposium on Informmation Theory (ISIT) 2004, p. 511, Chicago, IL, June/July, 2004.[PDF]

[C15] J. H. Cho, ``Equivalence of CDMA, FDMA, and TDMA over overloaded gaussian multiple-access channels," in Proc. IEEE Wireless Communications and Networking Conference (WCNC) 2004, vol. 1, pp. 519 - 524, Atlanta, GA, Mar. 2004. [Abstract]     [PDF Full-Text] 

[C14] J. H. Cho and W. Gao, ``Continuous-time equivalents of Welch bound equality sequences,'' in Proc. IEEE International Conference on Communications (ICC) 2004, vol.1, pp. 316--320, Paris, France, June 2004. [Abstract]     [PDF Full-Text]

[C13] M. Agarwal, J. H. Cho. L. Gao, and J. Wu, ``Energy efficient broadcast in wireless ad hoc networks with hitch-hiking," in Proc. IEEE INFOCOM 2004, vol 3, pp. 2096--2107, Hong Kong, China, Mar. 2004.  [Abstract][PDF Full-Text]  

[C12] J. H. Cho and Q. Zhang, ``Design of Rake receiver for UWB block-coded PPM over dense multipath channel,'' in Proc.  IEEE Military Communications Conference 2003, vol. 2, pp. 874--879, Boston, MA, Oct. 2003.[Abstract]   [PDF Full-Text]

[C11] J. H. Cho, ``Joint transmitter and receiver optimization for PAM over cyclostationary noise channel,'' in Proc.  IEEE International Symposium on Information Theory 2003, p.96, Yokohama, Japan, June/July 2003. [Abstract] [PDF Full-Text]

[C10] J. H. Cho, Y. K. Jeong, and J. S. Lehnert, ``Linear interference suppression for band-limited DS/SSSMA communications with spectral overlapping,'' in Proc. IEEE Military Communications Conference 2002, vol. 1 pp. 743--747, Anaheim, CA, Oct. 2002. [Abstract][PDF Full-Text]

[C9] Y. K. Jeong, J. H. Cho, and J. S. Lehnert, ``Interference suppression capability of linear receivers for band-limited DS/SSMA communications,'' in Proc. IEEE Military Communications Conference 2002, vol. 2, pp. 1325--1329, Anaheim, CA, Oct. 2002. [Abstract] [PDF Full-Text]

[C8] J. H. Cho and J. S. Lehnert, ``System design for DS/SSMA communications with negative chip excess bandwidth,'' in Proc. IEEE Military Communications Conference, vol. 2, pp. 1050--1054, McLean, VA, Oct. 2001. [PDF Full-Text]

---------------------------

[C7] W. Gao, J. H. Cho and J. S. Lehnert, ``Chip waveform design for DS/SSMA systems with aperiodic random spreading sequences,'' in Proc. IEEE Military Communications Conference 2000, vol. 2, pp. 856--860, Los Angeles, CA, Oct. 2000.[Abstract][PDF Full-Text]

[C6] J. H. Cho, Y. K. Jeong, and J. S. Lehnert, ``A closed-form BER expression for band-limited DS/SSMA communications,'' in Proc. IEEE Military Communications Conference 2000, vol. 2, pp. 554--558, Los Angeles, CA, Oct. 2000.[Abstract][PDF Full-Text]

[C5] J. H. Cho and J. S. Lehnert, ``System design for DS/SSMA communications with random spreading sequences and a matched filter receiver,'' in Proc. IEEE Wireless Communications and Networking Conference 2000., vol. 2, pp. 655-659, Chicago, Il, Sept. 2000.[Abstract][PDF Full-Text]

[C4] J. H. Cho and  J. S. Lehnert, `` Adaptive optimization of receiver chip waveform for DS/SSMA communications with random spreading sequences,'' in Proc. IEEE Military Communications Conference 1999, vol. 2, pp. 1046--1050, Sept. Atlantic City, NJ, Oct./Nov. 1999.[Abstract][PDF Full-Text]

[C3] J. H. Cho and J. S. Lehnert, `` Blind adaptive multiuser detection for DS/SSMA communications with generalized random spreading in a frequency-selective fading channel,'' in Proc. Annual Allerton Conference on Communication, Control, and Computing 1999, pp. 871-880, 1999.

[C2] W. Gao, J. H. Cho, and  J. S. Lehnert, ``Interference suppression in controlled cross-talk channel,''  in Proc.. IEEE Wireless Communications and Networking Conference 1999, vol. 3, pp. 1572--1575, New Orleans, LA, 1999.[PDF Full-Text]

[C1] J. H. Cho and  J. S. Lehnert, ``Optimum chip waveforms for DS/SSMA communications with random spreading sequences and a matched filter receiver,'' in Proc.  IEEE Wireless Communications and Networking Conference 1999, vol. 2, pp. 574--578, New Orleans, LA, Sept. 1999.[Abstract][PDF Full-Text]

 Patents

(DP) J. H. Cho and Y. Y. Kang, ``--'' to be submitted, sponsored by ETRI. 

(USP3)  J. H. Cho and B. W. Han, ``Method and Apparatus for coded overlay system design,'' to be submitted, sponsored by International Patent Submission Support Program.(12,000,000 KRW)  

(USP2) J. H. Cho and Y. G. Yoo, ``Method and Device of Frequency Domain Equalization,'' submitted on 2009.5.19. 

(DP3) J. H. Cho and B. W. Han, ``Method of Improving Capacity of Channel,'' submitted on 2009.1.7.  

(USP1) J. H. Cho and Y. H. Yun, ``Method and Apparatus of Sharing Spectrum with Legacy Communication System,'', submitted on 2008.11.25.  

(DP2) J. H. Cho and Y. G. Yoo, ``Method and Device of Frequency Domain Equalization,'' submitted on 2008.11.19. 

(DP1) J. H. Cho and Y. H. Yun, ``Data Transmission Method for Sharing Frequency Bandwidth with Legacy Communication Systems,'' submitted on 2008.05.15.  

 

 Sponsored Projects [KRF, KOSEF, IITA, CISE, FMF, IITA]

 Active              

LGE Project             

Sponsor LG Electronics
Proposal Title
Status Award was made on 12/2009 
Duration till 10/2010

NRF Basic Research Project             

Sponsor National Research Foundation, Korea
Proposal Title
Status Award was made on 9/2009 
Duration till 8/2012

ETRI Project             

Sponsor Ministry of Knowledge Economy, through IITA
Proposal Title
Status Award was made on 05/2009 
Duration till 12/2009

          Specific Fundamentals Research Program             

Sponsor Ministry of Education, Science and Technology, though KOSEF
Proposal Title
Principal Investigator Joon Ho Cho
CO-PI(s) No CO-PI
Institution POSTECH
Status Award was made on 05/1/2008  .
Duration till 02/28/2011

Young Investigators Research Program             

Sponsor Ministry of Education, Science and Technology, though KRF
Proposal Title
Principal Investigator Joon Ho Cho
CO-PI(s) No CO-PI
Institution POSTECH
Status Award was made on 07/1/2008 
Duration till 6/30/2010

IT Rearch Center (ITRC) Program

Sponsor Ministry of Information and Communication (MIC), Korea, though IITA
Proposal Title Broadband OFDM Mobile Access
Principal Investigator Kyung Whoon Cheun
CO-PI(s) Joon Ho Cho et al.
Institution Pohang University of Science and Technology, KAIST, Yonsei Univ., Seoul National Univ., and ICU.
Status Award was made on 09/1/2004
Duration till 12/31/2012

  Past

ETRI Project             

Sponsor Ministry of Knowledge Economy, through IITA
Proposal Title
Status Award was made on 06/9/2008 
Duration till 11/30/2008

Young Investigators Research Program             

Sponsor Ministry of Education, though KRF
Proposal Title Transmitter-Receiver Optimization for Wideband Multi-Antenna Communication Systems and Its Experimental Verification
Principal Investigator Joon Ho Cho
CO-PI(s) No CO-PI
Institution POSTECH
Status Award was made on 07/1/2006 for approx. USD 38,000.
Duration 2 years

           University IT Fundamental Research Program             

Sponsor Ministry of Information and Communication (MIC), Korea, though IITA
Proposal Title Energy Efficient Broadcasting in Wireless Ad Hoc Network Utilizaing Packet Combining and Swarm Intelligence
Principal Investigator Joon Ho Cho
CO-PI(s) Hyeong Soo Chang
Institution POSTECH, Sogang Univ.
Status Award was made on 07/1/2005 for approx. USD 37,000.
Duration 2 years

          BK21

Sponsor Ministry of Education, Korea, through Korea Research Foundation (KRF)
POSTECH Project Number 1KN0500324
Proposal Title BK21: 7th year
Principal Investigator Joon Ho Cho
Institution POSTECH
Status Award was made on 03/01/2005 for approx. USD 23,000.
Duration 1 year

           New Faculty Research Grant

Sponsor Pohang Univ. of Science and Technology (POSTECH)
Proposal Number 1RE0401501, 1RE0500401
Proposal Title Design of optimal wireless communication systems
Principal Investigator Joon Ho Cho
Institution POSTECH
Status Award was made on 08/01/2004 for approx. USD 10,000.
Duration 1 year

Sensors and Sensor Network

Sponsor NSF
Proposal Number 0329794
Proposal Title Collaborative Research: SENSORS: Energy Efficient Communication in Sensor Networks
Principal Investigator Lixin Gao
CO-PI(s) Jie Wu, Joon Ho Cho (CO-PI status terminated on July 2004.)
Institution U of Massachusetts Amherst, Florida Atlantic Univ.
Status Award was made on 08/18/2003 for USD 250,000 with an effective date of 08/15/2003.
Duration 3 years