Title :
Pseudocodeword Weights for LDPC Codes under Differential PSK Transmission over the Noncoherent AWGN Channel
Author :
Mo, Elisa ; Armand, Marc A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore, Singapore
fDate :
5/1/2011 12:00:00 AM
Abstract :
This Letter considers the finite-length analysis of iterative decoding of low-density parity-check codes under differential binary-phase-shift-keying (DBPSK) and differential quadrature-phase-shift-keying (DQPSK) over the noncoherent additive-white-Gaussian-noise channel. Specifically, we derive the weight of the pseudocodewords of a Tanner graph under these signaling schemes and use them to explain the difference in error performance between coded DBPSK and coded DQPSK.
Keywords :
AWGN channels; finite element analysis; iterative decoding; parity check codes; quadrature phase shift keying; LDPC codes; differential PSK transmission; differential binary phase shift keying; differential quadrature phase shift keying; finite-length analysis; iterative decoding; low density parity check codes; noncoherent AWGN Channel; noncoherent additive white Gaussian noise channel; pseudocodeword weights; AWGN channels; Bit error rate; Decoding; Iterative decoding; Phase shift keying; Signal to noise ratio; Belief-propagation decoding; differential phase-shift-keying; graph-cover decoding; iterative decoding; pseudocodewords; spectral thinning;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2011.022811.090131
