NDLI: Limited feedback MIMO precoding via alternating multiple differential codebooks

Content Provider	IEEE Xplore Digital Library
Author	Jun Zou Wang, M. Chunliang Yang Min Hua Wenjie Yang
Copyright Year	2013
Abstract	Differential codebook precoding is known as a capacity-achieving precoding scheme when the channel variation is slow. However, at medium to high channel variation speeds the differential codebook optimized for low channel variation speeds performs poorly compared to other precoding schemes, thereby limiting its application to practical systems. In this paper, we apply an alternating codebook technique to differential precoding to improve its robustness to high channel variability. The basic idea is creating multiple (instead of single) differential codebooks optimized for various channel variation speeds, and alternating these codebooks over time providing a virtually larger differential codebook, containing various precoding matrices optimized for different speeds, without the need for additional feedback overhead. Simulation results show that the proposed alternating differential codebook scheme not only retains the superior performance of differential precoding at low channel variation rate but, at the same time, reduces the sensitivity to high speed channel variations, resulting in a more practical precoding scheme.
Sponsorship	IEEE Malaysia ComSoc/VTS Joint Chapt.
Starting Page	202
Ending Page	206
File Size	297557
Page Count	5
File Format	PDF
ISBN	9781479915323
DOI	10.1109/MICC.2013.6805825
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-11-26
Publisher Place	Malaysia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Correlation Transmitters Conferences Linear precoding Temporal correlation Differential feedback MIMO Robustness Delays Indexes Multiple-Input Multiple-Output Limited feedback
Content Type	Text
Resource Type	Article

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