Gagik MKRTCHYAN

Model Based Prediction of Uplink Multi-Path Fading Channel Response for Pre-Equalization in Mobile MC-CDMA Systems
Gagik MKRTCHYAN  Katsuhiro NAITO  Kazuo MORI  Hideo KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/02/01
Vol. E91-B  No. 2  pp. 446-458
Type of Manuscript: PAPER
Category: Wireless Communication Technologies
Keyword: 
MC-CDMA,  pre-equalization,  multi-path fading channel,  model-based prediction method,  ML estimation, 
  Summary |  Full Text:PDF (1MB)
Evolutional Algorithm Based Learning of Time Varying Multipath Fading Channels for Software Defined Radio
Gagik MKRTCHYAN  Katsuhiro NAITO  Kazuo MORI  Hideo KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2006/12/01
Vol. E89-B  No. 12  pp. 3269-3273
Type of Manuscript: Special Section LETTER (Special Section on Software Defined Radio Technology and Its Applications)
Category: 
Keyword: 
evolutional algorithms,  software-defined radio,  time-varying multipath fading channel,  dynamic learning systems, 
  Summary |  Full Text:PDF (374.7KB)
Doppler Spread Estimation Method for OFDM Signal Using Mean Square of Channel Impulse Response's Time Derivative
Gagik MKRTCHYAN  Katsuhiro NAITO  Kazuo MORI  Hideo KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2006/10/01
Vol. E89-B  No. 10  pp. 2961-2966
Type of Manuscript: LETTER
Category: Antennas and Propagation
Keyword: 
Doppler spread,  OFDM,  time varying multipath fading channel, 
  Summary |  Full Text:PDF (523.3KB)
Correction of OFDM Signal Form in Time Domain to Reduce ICI Due to the Doppler Spread and Carrier Frequency Offset
Gagik MKRTCHYAN  Kazuo MORI  Hideo KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/01/01
Vol. E88-B  No. 1  pp. 122-133
Type of Manuscript: Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part 1)
Category: Interference Canceller
Keyword: 
OFDM,  DFT,  ICI,  Doppler spread,  carrier offset, 
  Summary |  Full Text:PDF (1.2MB)