Patent Number: 8,879,660

Title: Antipodal demodulation method and antipodal demodulator for non-coherent unitary space-time modulation in MIMO wireless communication

Abstract: Provided is an antipodal demodulation method and an antipodal demodulator for non-coherent unitary space-time modulation in MIMO wireless communication. The invention comprises: traversing L/2 constellation points in each sub-constellation of a non-coherent unitary space-time diagram for maximum likelihood demodulation calculation, determining a maximum trace .psi..sub.max and a minimum trace .psi..sub.min from traces of L/2 matrix products, calculating a maximum trace .psi..sub.max of a matrix product corresponding to the constellation matrix in the other sub-constellation according to .psi..sub.max=tr(Y.sup.H .PHI..sub.j .PHI..sub.h.sup.HY)=tr(Y.sup.HY)-tr(Y.sup.H.PHI..sub.j.PHI..sub.j.sup.HY)- =.sigma.-.psi..sub.min, and outputting a constellation point corresponding to the greater one of .psi..sub.max and .psi..sub.max as a demodulation signal. The antipodal demodulation method of the invention reduces calculation workload by 1/2 and features lower calculation complexity over the conventional maximum likelihood demodulation method without degrading demodulation performance.

Inventors: Peng; Li (Hubei, CN), Fu; Dawei (Hubei, CN)

Assignee: Huazhong University of Science and Technology

International Classification: H04B 7/02 (20060101); H04L 1/02 (20060101)

Expiration Date: 2019-11-04 0:00:00