Pseudo-Decorrelating Multiuser Receivers for Asynchronous Code Division Multiple Access (CDMA) Systems in a Rayleigh Fading Environment

Joong-Hoo PARK; William H. TRANTER

Pseudo-Decorrelating Multiuser Receivers for Asynchronous Code Division Multiple Access (CDMA) Systems in a Rayleigh Fading Environment

Joong-Hoo PARK, William H. TRANTER

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A new type of a linear decorrelating receiver, named Pseudo-Decorrelator, for asynchronous code division multiple access systems over a Rayleigh fading multipath channel is presented in this paper. Starting with the analyis of the multiple access components of the decision statistics, the outputs of a bank of matched filters, the (K 3K) cross-correlation matrix for each bit is obtained. The non-square cross-correlation matrix is then inverted using the concept of Penrose's generalized inverse of a matrix. In this receiver, the detection process can be started before the whole sequence is received at the receiver, and computing the inverse of a (KN KN) cross-correlation matrix, generally required for linear decorrelating receivers, can be avoided because it is enough to compute only the generalized inverse of a (K 3K) cross-correlation matrix for each data bit. Here, K is the number of users and N is the length of input data sequence. Simulation results are also presented for K-user systems over a Rayleigh fading multipath channel.

Publication: IEICE TRANSACTIONS on Communications Vol.E82-B No.5 pp.721-730

Publication Date: 1999/05/25

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Type of Manuscript: PAPER

Category: Radio Communication

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Joong-Hoo PARK, William H. TRANTER, "Pseudo-Decorrelating Multiuser Receivers for Asynchronous Code Division Multiple Access (CDMA) Systems in a Rayleigh Fading Environment" in IEICE TRANSACTIONS on Communications, vol. E82-B, no. 5, pp. 721-730, May 1999, doi: .
Abstract: A new type of a linear decorrelating receiver, named Pseudo-Decorrelator, for asynchronous code division multiple access systems over a Rayleigh fading multipath channel is presented in this paper. Starting with the analyis of the multiple access components of the decision statistics, the outputs of a bank of matched filters, the (K 3K) cross-correlation matrix for each bit is obtained. The non-square cross-correlation matrix is then inverted using the concept of Penrose's generalized inverse of a matrix. In this receiver, the detection process can be started before the whole sequence is received at the receiver, and computing the inverse of a (KN KN) cross-correlation matrix, generally required for linear decorrelating receivers, can be avoided because it is enough to compute only the generalized inverse of a (K 3K) cross-correlation matrix for each data bit. Here, K is the number of users and N is the length of input data sequence. Simulation results are also presented for K-user systems over a Rayleigh fading multipath channel.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e82-b_5_721/_p

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@ARTICLE{e82-b_5_721,
author={Joong-Hoo PARK, William H. TRANTER, },
journal={IEICE TRANSACTIONS on Communications},
title={Pseudo-Decorrelating Multiuser Receivers for Asynchronous Code Division Multiple Access (CDMA) Systems in a Rayleigh Fading Environment},
year={1999},
volume={E82-B},
number={5},
pages={721-730},
abstract={A new type of a linear decorrelating receiver, named Pseudo-Decorrelator, for asynchronous code division multiple access systems over a Rayleigh fading multipath channel is presented in this paper. Starting with the analyis of the multiple access components of the decision statistics, the outputs of a bank of matched filters, the (K 3K) cross-correlation matrix for each bit is obtained. The non-square cross-correlation matrix is then inverted using the concept of Penrose's generalized inverse of a matrix. In this receiver, the detection process can be started before the whole sequence is received at the receiver, and computing the inverse of a (KN KN) cross-correlation matrix, generally required for linear decorrelating receivers, can be avoided because it is enough to compute only the generalized inverse of a (K 3K) cross-correlation matrix for each data bit. Here, K is the number of users and N is the length of input data sequence. Simulation results are also presented for K-user systems over a Rayleigh fading multipath channel.},
keywords={},
doi={},
ISSN={},
month={May},}

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TY - JOUR
TI - Pseudo-Decorrelating Multiuser Receivers for Asynchronous Code Division Multiple Access (CDMA) Systems in a Rayleigh Fading Environment
T2 - IEICE TRANSACTIONS on Communications
SP - 721
EP - 730
AU - Joong-Hoo PARK
AU - William H. TRANTER
PY - 1999
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E82-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 1999
AB - A new type of a linear decorrelating receiver, named Pseudo-Decorrelator, for asynchronous code division multiple access systems over a Rayleigh fading multipath channel is presented in this paper. Starting with the analyis of the multiple access components of the decision statistics, the outputs of a bank of matched filters, the (K 3K) cross-correlation matrix for each bit is obtained. The non-square cross-correlation matrix is then inverted using the concept of Penrose's generalized inverse of a matrix. In this receiver, the detection process can be started before the whole sequence is received at the receiver, and computing the inverse of a (KN KN) cross-correlation matrix, generally required for linear decorrelating receivers, can be avoided because it is enough to compute only the generalized inverse of a (K 3K) cross-correlation matrix for each data bit. Here, K is the number of users and N is the length of input data sequence. Simulation results are also presented for K-user systems over a Rayleigh fading multipath channel.
ER -