doi: 10.7763/IJFCC.2015.V4.390
Group Switch-and-Stay Combining with Branch Partition for Space Diversity
Yawgeng A. Chau
,
- Department of Communications Engineering Yuan-Ze University Chung-Li, Taiwan.
Abstract
Group switch-and-stay combining (GSSC) withbranch partitions is proposed for a low-complexitymulti-antenna selection in a receiver diversity system. TheGSSC can enhance the performance of conventionalswitch-and-stay combining (SSC), and also has a lowercomplexity than maximal-ratio combining (MRC) or selectioncombining (SC). With the GSSC scheme, multiple antennabranches are divided into non-overlapped groups. In each group,the branch with the maximum signal-to-noise ratio (SNR) isused for threshold-based group switch. With particulargrouping and threshold choosing, both SC and SSC schemesbecome different special cases of the GSSC scheme. Forperformance illustration, BPSK signaling on independent andidentically distributed (i.i.d.) flat Rayleigh fading channels isconsidered, and the corresponding bit error probability (BEP)and outage probability are derived and manipulated intoclosed-forms. To minimize the BEP, locally optimal switchthresholds (STs) are defined and derived. For grouping with thesame number of branches and an identical switch threshold (ST),the locally optimal ST becomes globally optimal. Numericalresults are presented for the performance illustration andcomparison.
Keywords
- Group switch-and-stay combining
- spacediversity
- switch-and-stay combining
- selection combining
- optimal switch threshold
How to Cite
Yawgeng A. Chau and Mostafa Al-Harbawi, "Group Switch-and-Stay Combining with Branch Partition for Space Diversity," International Journal of Future Computer and Communication, vol. 4, no. 4, pp. 226-230, 2015. https://doi.org/ 10.7763/IJFCC.2015.V4.390
Copyright & License
Copyright © 2015 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).