TY - GEN
T1 - Binary and nonbinary LDPC-coded modulations for generalized fading channels
AU - Arabaci, Murat
AU - Djordjevic, Ivan B.
PY - 2011
Y1 - 2011
N2 - In this paper, we compare binary and nonbinary LDPC-coded modulation schemes with high-rate component codes, which are more suitable for high-speed wireless communication applications than schemes employing low-rate codes. In order to test the performance of these schemes under various fading conditions, we use two generalized fading distributions, namely the a-μ distribution and the K-μ distribution. By adjusting the parameters a, k, and μ, we simulate the conventional Rician, Rayleigh, and Nakagami-m fading cases. Further, to provide an example for cases where the field measurements may exhibit better fit to nonconventional distributions, we also study a heuristic fading scenario. Using QPSK modulation, we observe that binary and nonbinary LDPC-coded modulation schemes perform closely under all fading conditions considered. However, in terms of receiver latency, the nonbinary LDPC-coded modulation scheme may lower receiver latency especially when complex equalization schemes are employed since NB-LDPC-CM avoids using iterative equalization and decoding which is a crucial component in binary LDPC-coded modulation schemes.
AB - In this paper, we compare binary and nonbinary LDPC-coded modulation schemes with high-rate component codes, which are more suitable for high-speed wireless communication applications than schemes employing low-rate codes. In order to test the performance of these schemes under various fading conditions, we use two generalized fading distributions, namely the a-μ distribution and the K-μ distribution. By adjusting the parameters a, k, and μ, we simulate the conventional Rician, Rayleigh, and Nakagami-m fading cases. Further, to provide an example for cases where the field measurements may exhibit better fit to nonconventional distributions, we also study a heuristic fading scenario. Using QPSK modulation, we observe that binary and nonbinary LDPC-coded modulation schemes perform closely under all fading conditions considered. However, in terms of receiver latency, the nonbinary LDPC-coded modulation scheme may lower receiver latency especially when complex equalization schemes are employed since NB-LDPC-CM avoids using iterative equalization and decoding which is a crucial component in binary LDPC-coded modulation schemes.
KW - Wireless communications
KW - coded modulation
KW - error correction codes
KW - generalized fading
KW - low-density parity-check codes
KW - nonbinary LDPC codes
KW - α-μ distribution
KW - κ-μ distribution
UR - http://www.scopus.com/inward/record.url?scp=84855860387&partnerID=8YFLogxK
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U2 - 10.1109/TELSKS.2011.6112023
DO - 10.1109/TELSKS.2011.6112023
M3 - Conference contribution
AN - SCOPUS:84855860387
SN - 9781457720161
T3 - 2011 10th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services, TELSIKS 2011 - Proceedings of Papers
SP - 148
EP - 151
BT - 2011 10th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services, TELSIKS 2011 - Proceedings of Papers
T2 - 2011 10th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services, TELSIKS 2011
Y2 - 5 October 2011 through 8 October 2011
ER -