Linear Equalization for Multicode MC-CDMA Downlink Channels

We investigate multirate multicarrier code-division multiple-access (MC-CDMA) downlink systems with multicode transmission. Specifically, we design a new linear equalizer that outperforms the minimum mean-squared error (MMSE) per-carrier equalizer, without requiring the spreading codes of the interf...

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Bibliographic Details
Published in:IEEE communications letters 2012-09, Vol.16 (9), p.1353-1356
Main Author: Rugini, L.
Format: Article
Language:English
Subjects:
Applied sciences
Bit error rate
Channels
Complexity
Complexity theory
Design engineering
Detection, estimation, filtering, equalization, prediction
Downlink
Equalization
Equalizers
Errors
Exact sciences and technology
Information, signal and communications theory
Multicarrier code division multiple access
multicarrier code-division multiple access (MC-CDMA)
multicode
multirate
Signal and communications theory
Signal to noise ratio
Signal, noise
Simulation
Spreading
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
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Summary:We investigate multirate multicarrier code-division multiple-access (MC-CDMA) downlink systems with multicode transmission. Specifically, we design a new linear equalizer that outperforms the minimum mean-squared error (MMSE) per-carrier equalizer, without requiring the spreading codes of the interfering users. The complexity of this new linear equalizer is similar to that of the MMSE per-user equalizer, which however needs the spreading codes of the interfering users. Simulation results validate the effectiveness of the proposed equalizer, especially when there are few interfering users.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2012.071612.120933