NDLI: Joint training interval length and power allocation optimization for MIMO flat fading channels

Content Provider	IEEE Xplore Digital Library
Author	Hadj-Kacem, I. Sellami, N. Fijalkow, I. Roumy, A.
Copyright Year	2009
Description	Author affiliation: Laboratoire LETI, ENIS, Route Sokra km 3.5, B.P 3038 Sfax, Tunisia (Hadj-Kacem, I.; Sellami, N.) \|\| INRIA, Campus de Beaulieu, 35042 Rennes Cedex, France (Roumy, A.) \|\| ETIS, UMR 8051, CNRS, ENSEA, Univ Cergy-Pontoise, F-95000 Cergy, France (Fijalkow, I.)
Abstract	In this paper, we jointly optimize the training interval length and the power allocation for MIMO (Multiple-Input Multiple-Output) flat fading channels when a Maximum A Posteriori (MAP) detector is used at the receiver and the training and data powers are allowed to vary. We calculate the equivalent Signal-to-Noise Ratio (SNR) at the output of the MAP detector. Based on this expression, we define an effective SNR taking into account the data throughput loss due to the use of pilot symbols. We find that the optimal length of the training interval maximizing this quantity is equal to the number of transmit antennas. When the values of the pilot and data powers are not allowed to be different, we give the optimal training interval length maximizing the effective SNR and we show that it can be larger than the number of transmit antennas.
Starting Page	16
Ending Page	20
File Size	155000
Page Count	5
File Format	PDF
ISBN	9781424435845
DOI	10.1109/ISWCS.2009.5285251
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-07
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fading Equalizers Transmitting antennas Receiving antennas Channel estimation Detectors Mean square error methods Throughput MIMO Signal to noise ratio
Content Type	Text
Resource Type	Article

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