Title
Partially Coherent EGC Reception of Uncoded and LDPC-Coded Signals over Generalized Fading Channels.
Abstract
This paper studies the bit-error rate (BER) performance of partially coherent equal-gain combining reception of uncoded and low-density parity-check (LDPC)-coded binary and quaternary phase-shift keying signals over generalized − fading channels. For the uncoded signal detection case the obtained numerical and simulation results illustrate the BER performance degradation due to the imperfect reference signal recovery, receiver unbalancing and fading. It is demonstrated that imperfect cophasing causes an irreducible BER performance. Furthermore, we design large girth quasi-cyclic LDPC code with high code rate, suitable for use in communications over generalized fading channels. The proposed LDPC code does not exhibit the error floor phenomena, in the region of interest, even in the presence of imperfect cophasing and receiver unbalances, and outperforms standard convolutional code of lower code rate in the observed impairments. The effects of number of iterations in decoding algorithm and codeword length on BER performance are also investigated.
Year
DOI
Venue
2012
10.1007/s11277-011-0323-6
Wireless Personal Communications
Keywords
Field
DocType
Bit-error rate,Equal-gain combining,Low-density parity-check (LDPC) codes,Phase error,Phase-shift keying
Convolutional code,Code rate,Fading,Low-density parity-check code,Computer science,Algorithm,Theoretical computer science,Real-time computing,Code word,Decoding methods,Bit error rate,Phase-shift keying
Journal
Volume
Issue
ISSN
66
1
0929-6212
Citations 
PageRank 
References 
0
0.34
10
Authors
3
Name
Order
Citations
PageRank
Goran T. Djordjevic1239.37
Ivan B. Djordjevic25613.28
George K. Karagiannidis35216362.34