NDLI: Signature Quantization in Fading CDMA with Limited Feedback

Content Provider	IEEE Xplore Digital Library
Author	Santipach, W.
Copyright Year	1972
Abstract	In this work, we analyze the performance of a signature quantization scheme for reverse-link Direct Sequence (DS)- Code Division Multiple Access (CDMA). Assuming perfect estimates of the channel and interference covariance, the receiver selects the signature that minimizes interference power or maximizes signal-to-interference plus noise ratio (SINR) for a desired user from a signature codebook. The codebook index corresponding to the optimal signature is then relayed to the user with a finite number of bits via a feedback channel. Here we are interested in the performance of a Random Vector Quantization (RVQ) codebook, which contains independent isotropically distributed vectors. Assuming arbitrary transmit power allocation, we consider additive white Gaussian noise (AWGN) channel first with no fading and subsequently, with multipath fading. We derive the corresponding SINR in a large system limit at the output of matched filter and linear minimum mean squared error (MMSE) receiver. Numerical examples show that the derived large system results give a good approximation to the performance of finite-size system and that the MMSE receiver achieves close to a single-user performance with only one feedback bit per signature element.
Starting Page	569
Ending Page	577
Page Count	9
File Size	337698
File Format	PDF
ISSN	00906778
Volume Number	59
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Interference Receivers Signal to noise ratio Fading Eigenvalues and eigenfunctions Quantization Equations CDMA Random vector quantization large system limit signature quantization limited feedback multipath fading
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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Signature quantization in fading cdma with limited feedback (2009).

Large system performance of signature 1 quantization in cdma (2009).

Asymptotic performance of DS-CDMA with linear MMSE receiver and limited feedback (2008)

Multiuser signature quantization with tree-structured codebook in DS-CDMA

Signature Optimization for CDMA with Limited Feedback (2005)

Signature Optimization for CDMA with Limited Feedback (2005)

Networked feedback stabilization over quantized fading channels

On the performance of random vector quantization limited feedback beamforming in a MISO system

Signature optimization for ds-cdma with limited feedback (2002).

Signature Quantization in Fading CDMA with Limited Feedback

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