Frequency-Domain Pre-Equalization for MC-CDMA/TDD Uplink and Its Bit Error Rate Analysis

Satoshi ABE; Shinsuke TAKAOKA; Hiromichi TOMEBA; Fumiyuki ADACHI

doi:10.1093/ietcom/e89-b.1.162

Frequency-Domain Pre-Equalization for MC-CDMA/TDD Uplink and Its Bit Error Rate Analysis

Satoshi ABE, Shinsuke TAKAOKA, Hiromichi TOMEBA, Fumiyuki ADACHI

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In multi-carrier code division multiple access (MC-CDMA) uplink (mobile-to-base station), since different users' signals go through different frequency-selective fading channels, large multi-access interference (MAI) is produced. The use of frequency-domain equalization reception can only partially restore the orthogonality among different users' signals, resulting in a severe degradation in the bit error rate (BER) performance. Hence, frequency-domain pre-equalization transmission, which equalizes the MC-CDMA signal before transmission, is recently attracting attention. In this paper, we present a generalized minimum mean square error (GMMSE) frequency-domain pre-equalization transmission suitable for MC-CDMA/TDD uplink. The pre-equalization weight is derived based on the method of Lagrange multipliers. The theoretical analysis of BER performance using the GMMSE frequency-domain pre-equalization transmission in a frequency-selective Rayleigh fading channel is presented and the result is confirmed by computer simulation.

Publication: IEICE TRANSACTIONS on Communications Vol.E89-B No.1 pp.162-173

Publication Date: 2006/01/01

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Online ISSN: 1745-1345

DOI: 10.1093/ietcom/e89-b.1.162

Type of Manuscript: PAPER

Category: Wireless Communication Technologies

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Satoshi ABE, Shinsuke TAKAOKA, Hiromichi TOMEBA, Fumiyuki ADACHI, "Frequency-Domain Pre-Equalization for MC-CDMA/TDD Uplink and Its Bit Error Rate Analysis" in IEICE TRANSACTIONS on Communications, vol. E89-B, no. 1, pp. 162-173, January 2006, doi: 10.1093/ietcom/e89-b.1.162.
Abstract: In multi-carrier code division multiple access (MC-CDMA) uplink (mobile-to-base station), since different users' signals go through different frequency-selective fading channels, large multi-access interference (MAI) is produced. The use of frequency-domain equalization reception can only partially restore the orthogonality among different users' signals, resulting in a severe degradation in the bit error rate (BER) performance. Hence, frequency-domain pre-equalization transmission, which equalizes the MC-CDMA signal before transmission, is recently attracting attention. In this paper, we present a generalized minimum mean square error (GMMSE) frequency-domain pre-equalization transmission suitable for MC-CDMA/TDD uplink. The pre-equalization weight is derived based on the method of Lagrange multipliers. The theoretical analysis of BER performance using the GMMSE frequency-domain pre-equalization transmission in a frequency-selective Rayleigh fading channel is presented and the result is confirmed by computer simulation.
URL: https://globals.ieice.org/en_transactions/communications/10.1093/ietcom/e89-b.1.162/_p

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@ARTICLE{e89-b_1_162,
author={Satoshi ABE, Shinsuke TAKAOKA, Hiromichi TOMEBA, Fumiyuki ADACHI, },
journal={IEICE TRANSACTIONS on Communications},
title={Frequency-Domain Pre-Equalization for MC-CDMA/TDD Uplink and Its Bit Error Rate Analysis},
year={2006},
volume={E89-B},
number={1},
pages={162-173},
abstract={In multi-carrier code division multiple access (MC-CDMA) uplink (mobile-to-base station), since different users' signals go through different frequency-selective fading channels, large multi-access interference (MAI) is produced. The use of frequency-domain equalization reception can only partially restore the orthogonality among different users' signals, resulting in a severe degradation in the bit error rate (BER) performance. Hence, frequency-domain pre-equalization transmission, which equalizes the MC-CDMA signal before transmission, is recently attracting attention. In this paper, we present a generalized minimum mean square error (GMMSE) frequency-domain pre-equalization transmission suitable for MC-CDMA/TDD uplink. The pre-equalization weight is derived based on the method of Lagrange multipliers. The theoretical analysis of BER performance using the GMMSE frequency-domain pre-equalization transmission in a frequency-selective Rayleigh fading channel is presented and the result is confirmed by computer simulation.},
keywords={},
doi={10.1093/ietcom/e89-b.1.162},
ISSN={1745-1345},
month={January},}

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TY - JOUR
TI - Frequency-Domain Pre-Equalization for MC-CDMA/TDD Uplink and Its Bit Error Rate Analysis
T2 - IEICE TRANSACTIONS on Communications
SP - 162
EP - 173
AU - Satoshi ABE
AU - Shinsuke TAKAOKA
AU - Hiromichi TOMEBA
AU - Fumiyuki ADACHI
PY - 2006
DO - 10.1093/ietcom/e89-b.1.162
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E89-B
IS - 1
JA - IEICE TRANSACTIONS on Communications
Y1 - January 2006
AB - In multi-carrier code division multiple access (MC-CDMA) uplink (mobile-to-base station), since different users' signals go through different frequency-selective fading channels, large multi-access interference (MAI) is produced. The use of frequency-domain equalization reception can only partially restore the orthogonality among different users' signals, resulting in a severe degradation in the bit error rate (BER) performance. Hence, frequency-domain pre-equalization transmission, which equalizes the MC-CDMA signal before transmission, is recently attracting attention. In this paper, we present a generalized minimum mean square error (GMMSE) frequency-domain pre-equalization transmission suitable for MC-CDMA/TDD uplink. The pre-equalization weight is derived based on the method of Lagrange multipliers. The theoretical analysis of BER performance using the GMMSE frequency-domain pre-equalization transmission in a frequency-selective Rayleigh fading channel is presented and the result is confirmed by computer simulation.
ER -