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The multi-antenna code multiplexing front-end: theory and performance

Published online by Cambridge University Press:  07 January 2011

Matthieu Gautier ,
Guillaume Villemaud  and
Ioan Burciu
Matthieu Gautier*
Affiliation:
Université de Lyon, INRIA, INSA-Lyon, CITI, F-69621 Villeurbanne, France. Orange Labs, 28, Chemin du Vieux Chêne, 38243 Meylan, France.
Guillaume Villemaud
Affiliation:
Université de Lyon, INRIA, INSA-Lyon, CITI, F-69621 Villeurbanne, France.
Ioan Burciu
Affiliation:
Université de Lyon, INRIA, INSA-Lyon, CITI, F-69621 Villeurbanne, France. Orange Labs, 28, Chemin du Vieux Chêne, 38243 Meylan, France.
*
Corresponding author: M. Gautier Email: matthieu.gautier1@gmail.com
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Abstract

In this paper, we address the architecture of a multi-antenna receiver and we aim at reducing the complexity of the analog front-end. To this end, an innovative architecture is introduced based on code multiplexing. This architecture uses the direct sequence spread spectrum technique in order to multiplex the different antennas contributions through a single In-phase/Quadrature (IQ) demodulator. Simulation and measurement results show that the bit error rate does not increase so much with the multiplexing in both Gaussian and fading environments and with strong radiofrequency (RF) defaults conditions. The complexity evaluation shows that the proposed architecture significantly reduces the chip area and the power consumption of the front-end.

Keywords

Green radioLow complexity front-endMulti-antenna receiverCode multiplexing
Type
Original Article
Information
International Journal of Microwave and Wireless Technologies , Volume 2 , Issue 6 , December 2010 , pp. 515 - 522
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2010

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