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1676 IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 51, NO. 10, OCTOBER 2003 Joint Noncoherent Demodulation and Decoding for
 

Summary: 1676 IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 51, NO. 10, OCTOBER 2003
Joint Noncoherent Demodulation and Decoding for
the Block Fading Channel: A Practical Framework
for Approaching Shannon Capacity
Rong-Rong Chen, Ralf Koetter, Member, IEEE, Upamanyu Madhow, Senior Member, IEEE, and Dakshi Agrawal
Abstract--This paper contains a systematic investigation of
practical coding strategies for noncoherent communication over
fading channels, guided by explicit comparisons with informa-
tion-theoretic benchmarks. Noncoherent reception is interpreted
as joint data and channel estimation, assuming that the channel is
time varying and a priori unknown. We consider iterative decoding
for a serial concatenation of a standard binary outer channel
code with an inner modulation code amenable to noncoherent
detection. For an information rate of about 1/2 bit per channel
use, the proposed scheme, using a quaternary phase-shift keying
(QPSK) alphabet, provides performance within 1.61.7 dB of
Shannon capacity for the block fading channel, and is about 2.53
dB superior to standard differential demodulation in conjunction
with an outer channel code. We also provide capacity computa-
tions for noncoherent communication using standard phase-shift

  

Source: Agrawal, Rakesh - IBM T.J. Watson Research Center
Madhow, Upamanyu - Department of Electrical and Computer Engineering, University of California at Santa Barbara

 

Collections: Computer Technologies and Information Sciences; Engineering