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Indexed by:期刊论文

Date of Publication:2016-03-01

Journal:CANADIAN JOURNAL OF ELECTRICAL AND COMPUTER ENGINEERING-REVUE CANADIENNE DE GENIE ELECTRIQUE ET INFORMATIQUE

Included Journals:SCIE、EI、Scopus

Volume:39

Issue:2

Page Number:103-111

ISSN No.:0840-8688

Key Words:Cross layer; data reliability; multiuser multiple input multiple output (MU-MIMO); physical-layer network coding (PNC); Vertical-Bell Laboratories Layered Space-Time (V-BLAST)

Abstract:The multiuser multiple input multiple output (MU-MIMO) proficiency is practicable to significantly improve the diversity and multiplexing gain in emerging wireless networks. Physical-layer network coding (PNC) can efficiently manage and improve the utilization of available spectrum. To resolve the data reliability and diversity gain, a kind of combination called Vertical-Bell Laboratories Layered Space-Time (V-BLAST) and PNC has brought forth a V-BLAST with PNC (V-BLAST-PNC) strategy to enhance the throughput and the performance of emerging wireless networks. We propose a novel cross-layer V-BLAST-based PNC scheme to avail the diversity in multiplexing gain by packet redundancy. The redundancy is introduced to improve the throughput and energy efficiency performance in MU-MIMO by avoiding the packets retransmissions at an upper layer. Experimental evaluation is based on BPSK/QPSK modulation over flat fading channels with the zero forcing and minimum mean square error equalizers. Based on simulation results, we conclude that the proposed V-BLAST-PNC scheme has fewer packets retransmissions and better throughput when compared with the state-of-the-art traditional solutions.