TY - GEN
T1 - Evaluation of reduced search iterative MIMO detection schemes
AU - Ahmed, Saleem
AU - Kim, Sooyoung
PY - 2013
Y1 - 2013
N2 - This paper presents a complexity reduction method for iterative MIMO detection scheme. We first investigate the statistical characteristics of the log-likelihood ratios (LLRs) across the MIMO detector and decoder, and set a threshold value for the reduced search MIMO detector. Based on this threshold value, the decision is made whether re-estimation of MIMO detection using the soft information provided by the decoder is necessary. This is to eliminate unnecessary repetitive calculation for symbols with high reliability. As iteration goes by, complexity is largely reduced. We compare the performance of the proposed scheme by using maximum likelihood (ML) or maximum a posteriori (MAP). Simulation results show that the proposed complexity reduction method reduces the complexity by about 30% with negligible bit error rate (BER) performance degradation.
AB - This paper presents a complexity reduction method for iterative MIMO detection scheme. We first investigate the statistical characteristics of the log-likelihood ratios (LLRs) across the MIMO detector and decoder, and set a threshold value for the reduced search MIMO detector. Based on this threshold value, the decision is made whether re-estimation of MIMO detection using the soft information provided by the decoder is necessary. This is to eliminate unnecessary repetitive calculation for symbols with high reliability. As iteration goes by, complexity is largely reduced. We compare the performance of the proposed scheme by using maximum likelihood (ML) or maximum a posteriori (MAP). Simulation results show that the proposed complexity reduction method reduces the complexity by about 30% with negligible bit error rate (BER) performance degradation.
UR - https://www.scopus.com/pages/publications/84899447143
U2 - 10.1109/ICTC.2013.6675319
DO - 10.1109/ICTC.2013.6675319
M3 - Conference paper
AN - SCOPUS:84899447143
SN - 9781479906987
T3 - International Conference on ICT Convergence
SP - 112
EP - 116
BT - 2013 International Conference on ICT Convergence
PB - IEEE Computer Society
T2 - 2013 International Conference on Information and Communication Technology Convergence, ICTC 2013
Y2 - 14 October 2013 through 16 October 2013
ER -