Paper Info
Title
Approximate Minimum BER Power Allocation for MIMO Spatial Multiplexing Systems
Abstract
Abstract—Precoding for,multiple-input multiple-output (MIMO) spatial multiplexing generally requires high feed- back overhead and/or high-complexity processing. Simultaneous reduction in transmitter complexity and feedback overheadis pro- posed by imposing a diagonal structural constraint to precoding, i.e., power allocation. Minimum bit-error rate (MBER) is em- ployed as the optimization criterion, and an approximate MBER (AMBER) power-allocation algorithm is proposed for a variety of receivers, including zero-forcing (ZF), successive interference cancellation (SIC), and ordered SIC (OSIC). While previously proposed precoding schemes either require ZF equalization for MBER, or use a minimum mean-squared error (MMSE) criterion, we provide a unified MBER solution to power allocation for ZF, SIC, and OSIC receiver structures. Improved error-rate perfor- mance is shown both analytically and by simulation. Simulation results also indicate that SIC and OSIC with AMBER power allocation offer superior performance over previously proposed MBER precoding with ZF equalization, as well as over MMSE precoding/decoding. Performance under noisy channels and power feedback is analyzed. A modified AMBER algorithm that mitigates error propagation in interference cancellation is devel- oped. Compared with existing precoding methods, the proposed schemes significantly reduce both transmit processing complexity and feedback overhead, and improve error-rate performance. Index Terms—Minimum bit-error rate (MBER), multiple-input
Year
DOI
Venue
2007
10.1109/TCOMM.2006.887503
IEEE Transactions on Communications
Keywords
Field
DocType
power feedback,multiple-input multiple-output systems,radio transmitters,precoding,multiplexing,multiple-input multiple-output (MIMO),error propagation mitigation,zero-forcing receivers,transmitter complexity,MIMO spatial multiplexing systems,successive interference cancellation receivers,Minimum bit-error rate (MBER),approximate minimum BER power allocation,wireless channels,successive interference cancellation (SIC),bit-error rate,MIMO communication,power allocation,radio receivers,interference suppression,transmit processing complexity,error statistics,ordered SIC receivers,noisy channels,spatial multiplexing,feedback overhead
Equalization (audio),Control theory,Computer science,Single antenna interference cancellation,MIMO,Electronic engineering,Decoding methods,Multiplexing,Spatial multiplexing,Precoding,Bit error rate
Journal
Volume
Issue
ISSN
55
1
0090-6778
Citations 
PageRank 
References 
30
1.57
18
Authors
2
Name
Order
Citations
PageRank
Neng Wang1301.57
Steven D. Blostein232961.46