Downlink Detection Schemes for MC-CDMA Systems in Indoor Environments
Summary :
Recently, considerable attention has been devoted to the combination of direct sequence-code division multiple access (DS-CDMA) and multi-carrier (MC) modulation for high bit rate indoor wireless systems. In this work we consider the downlink of a cellular MC DS-CDMA system. In particular, we evaluate the performance of some detection schemes considering typical indoor radio channels. Channel estimation techniques are investigated and an effective sub-channel estimation technique is proposed. Moreover, we compare the performance of two equalization techniques combined with two space diversity combining schemes. The results show that good performance can be obtained by a post-detection diversity selection scheme combined with a MMSE equalization technique; moreover, if a proper guard time is selected, performance is almost independent of the number of paths of the channel's impulse response. Results are given in terms of BER obtained by means of analytical computations and simulations.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E79-B No.9 pp.1351-1360
- Publication Date
- 1996/09/25
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- Special Section PAPER (Special Issue on Personal Communications)
- Category
- Indoor Wireless Systems
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Luciano TOMBA, Witold A. KRZYMIEN, "Downlink Detection Schemes for MC-CDMA Systems in Indoor Environments" in IEICE TRANSACTIONS on Communications,
vol. E79-B, no. 9, pp. 1351-1360, September 1996, doi: .
Abstract: Recently, considerable attention has been devoted to the combination of direct sequence-code division multiple access (DS-CDMA) and multi-carrier (MC) modulation for high bit rate indoor wireless systems. In this work we consider the downlink of a cellular MC DS-CDMA system. In particular, we evaluate the performance of some detection schemes considering typical indoor radio channels. Channel estimation techniques are investigated and an effective sub-channel estimation technique is proposed. Moreover, we compare the performance of two equalization techniques combined with two space diversity combining schemes. The results show that good performance can be obtained by a post-detection diversity selection scheme combined with a MMSE equalization technique; moreover, if a proper guard time is selected, performance is almost independent of the number of paths of the channel's impulse response. Results are given in terms of BER obtained by means of analytical computations and simulations.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e79-b_9_1351/_p
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@ARTICLE{e79-b_9_1351,
author={Luciano TOMBA, Witold A. KRZYMIEN, },
journal={IEICE TRANSACTIONS on Communications},
title={Downlink Detection Schemes for MC-CDMA Systems in Indoor Environments},
year={1996},
volume={E79-B},
number={9},
pages={1351-1360},
abstract={Recently, considerable attention has been devoted to the combination of direct sequence-code division multiple access (DS-CDMA) and multi-carrier (MC) modulation for high bit rate indoor wireless systems. In this work we consider the downlink of a cellular MC DS-CDMA system. In particular, we evaluate the performance of some detection schemes considering typical indoor radio channels. Channel estimation techniques are investigated and an effective sub-channel estimation technique is proposed. Moreover, we compare the performance of two equalization techniques combined with two space diversity combining schemes. The results show that good performance can be obtained by a post-detection diversity selection scheme combined with a MMSE equalization technique; moreover, if a proper guard time is selected, performance is almost independent of the number of paths of the channel's impulse response. Results are given in terms of BER obtained by means of analytical computations and simulations.},
keywords={},
doi={},
ISSN={},
month={September},}
Copy
TY - JOUR
TI - Downlink Detection Schemes for MC-CDMA Systems in Indoor Environments
T2 - IEICE TRANSACTIONS on Communications
SP - 1351
EP - 1360
AU - Luciano TOMBA
AU - Witold A. KRZYMIEN
PY - 1996
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E79-B
IS - 9
JA - IEICE TRANSACTIONS on Communications
Y1 - September 1996
AB - Recently, considerable attention has been devoted to the combination of direct sequence-code division multiple access (DS-CDMA) and multi-carrier (MC) modulation for high bit rate indoor wireless systems. In this work we consider the downlink of a cellular MC DS-CDMA system. In particular, we evaluate the performance of some detection schemes considering typical indoor radio channels. Channel estimation techniques are investigated and an effective sub-channel estimation technique is proposed. Moreover, we compare the performance of two equalization techniques combined with two space diversity combining schemes. The results show that good performance can be obtained by a post-detection diversity selection scheme combined with a MMSE equalization technique; moreover, if a proper guard time is selected, performance is almost independent of the number of paths of the channel's impulse response. Results are given in terms of BER obtained by means of analytical computations and simulations.
ER -
English
