TY - GEN
T1 - The performance of sphere decoders for iterative spatial multiplexing MIMO receiver
AU - Zhao, Ming
AU - Shi, Zhenning
AU - Reed, Mark C.
PY - 2008
Y1 - 2008
N2 - Pohst and Schnorr-Euchner (SE) are two popular sphere decoders (SD) to perform near maximum likelihood (ML) detection in Spatial Multiplexing multiple-input-multiple-output (MIMO) system. Recent work [1] showed Pohst and SE are two variants of the well known stack sequential decoding and proposed modification to each strategy to shown significant complexity reduction but with near ML performance. This paper proposed modified Pohst and SE algorithms by taking into account the a priori information to estimate the maximum a posteriori (MAP) probability of the received symbol sequence. Simulation results show that significant performance gain can be achieved from iterative MAP approach and complexity reduction can be obtained for SE enumeration strategy with minor performance loss compared to Phost enumeration algorithm.
AB - Pohst and Schnorr-Euchner (SE) are two popular sphere decoders (SD) to perform near maximum likelihood (ML) detection in Spatial Multiplexing multiple-input-multiple-output (MIMO) system. Recent work [1] showed Pohst and SE are two variants of the well known stack sequential decoding and proposed modification to each strategy to shown significant complexity reduction but with near ML performance. This paper proposed modified Pohst and SE algorithms by taking into account the a priori information to estimate the maximum a posteriori (MAP) probability of the received symbol sequence. Simulation results show that significant performance gain can be achieved from iterative MAP approach and complexity reduction can be obtained for SE enumeration strategy with minor performance loss compared to Phost enumeration algorithm.
UR - http://www.scopus.com/inward/record.url?scp=57849150534&partnerID=8YFLogxK
U2 - 10.1109/TURBOCODING.2008.4658682
DO - 10.1109/TURBOCODING.2008.4658682
M3 - Conference contribution
SN - 9781424428632
T3 - 2008 5th International Symposium on Turbo Codes and Related Topics, TURBOCODING
SP - 113
EP - 117
BT - 2008 5th International Symposium on Turbo Codes and Related Topics, TURBOCODING
T2 - 2008 5th International Symposium on Turbo Codes and Related Topics, TURBOCODING
Y2 - 1 September 2008 through 5 September 2008
ER -