TY - GEN
T1 - Modified Schnorr-Euchner sphere decoding for iterative spatial multiplexing MIMO receiver
AU - Zhao, Ming
AU - Shi, Zhenning
AU - Reed, Mark C.
PY - 2008
Y1 - 2008
N2 - Recent work has shown that the Sphere Decoder (SD) based on Schnorr-Euchner (SE) Strategy offers significant reductions in the computation complexity compared to all previously proposed sphere decoders with a near-Maximum Likelihood (ML) detection performance. This paper proposed a novel modified SE algorithm for iterative Spatial Multiplexing multiple-input-multiple-output (MIMO) receiver to estimate the maximum a posteriori (MAP) probability of the received symbol sequence. In addition, two schemes are proposed to further improve the performance and reduce the complexity over iterations, one is to improve the ZF-DFE estimate by using the quadratic approximation of a priori information, the other is to improve the tree search by employing starting point zig-zag technique. Simulation results show that significant performance gain and complexity reduction can be obtained compared to existing SE approach.
AB - Recent work has shown that the Sphere Decoder (SD) based on Schnorr-Euchner (SE) Strategy offers significant reductions in the computation complexity compared to all previously proposed sphere decoders with a near-Maximum Likelihood (ML) detection performance. This paper proposed a novel modified SE algorithm for iterative Spatial Multiplexing multiple-input-multiple-output (MIMO) receiver to estimate the maximum a posteriori (MAP) probability of the received symbol sequence. In addition, two schemes are proposed to further improve the performance and reduce the complexity over iterations, one is to improve the ZF-DFE estimate by using the quadratic approximation of a priori information, the other is to improve the tree search by employing starting point zig-zag technique. Simulation results show that significant performance gain and complexity reduction can be obtained compared to existing SE approach.
UR - http://www.scopus.com/inward/record.url?scp=57849149524&partnerID=8YFLogxK
U2 - 10.1109/ISSSTA.2008.29
DO - 10.1109/ISSSTA.2008.29
M3 - Conference contribution
SN - 9781424422043
T3 - IEEE International Symposium on Spread Spectrum Techniques and Applications
SP - 124
EP - 128
BT - 2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications - Proceedings, ISSSTA2008
T2 - 2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications, ISSSTA2008
Y2 - 25 August 2008 through 28 August 2008
ER -