TY - JOUR

T1 - A new fast generalized sphere decoding algorithm in MIMO systems

AU - Liu, Chao

AU - Yang, Zongkai

AU - He, Jianhua

PY - 2005

Y1 - 2005

N2 - A new generalized sphere decoding algorithm is proposed for underdetermined MIMO systems with fewer receive antennas N than transmit antennas M. The proposed algorithm is significantly faster than the existing generalized sphere decoding algorithms. The basic idea is to partition the transmitted signal vector into two subvectors x and x with N - 1 and M - N + 1 elements respectively. After some simple transformations, an outer layer Sphere Decoder (SD) can be used to choose proper x and then use an inner layer SD to decide x, thus the whole transmitted signal vector is obtained. Simulation results show that Double Layer Sphere Decoding (DLSD) has far less complexity than the existing Generalized Sphere Decoding (GSDs).

AB - A new generalized sphere decoding algorithm is proposed for underdetermined MIMO systems with fewer receive antennas N than transmit antennas M. The proposed algorithm is significantly faster than the existing generalized sphere decoding algorithms. The basic idea is to partition the transmitted signal vector into two subvectors x and x with N - 1 and M - N + 1 elements respectively. After some simple transformations, an outer layer Sphere Decoder (SD) can be used to choose proper x and then use an inner layer SD to decide x, thus the whole transmitted signal vector is obtained. Simulation results show that Double Layer Sphere Decoding (DLSD) has far less complexity than the existing Generalized Sphere Decoding (GSDs).

KW - double layer sphere decoding algorithm

KW - generalized sphere decoding algorithm

KW - MIMO

KW - wireless communications

UR - http://www.scopus.com/inward/record.url?scp=23044516211&partnerID=8YFLogxK

UR - http://caod.oriprobe.com/articles/9547557/A_New_Fast_Generalized_Sphere_Decoding_Algorithm_in_MIMO_Systems.htm

M3 - Article

AN - SCOPUS:23044516211

VL - 27

SP - 1114

EP - 1117

JO - Dianzi Yu Xinxi Xuebao [Journal of Electronics and Information Technology]

JF - Dianzi Yu Xinxi Xuebao [Journal of Electronics and Information Technology]

SN - 1009-5896

IS - 7

ER -