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An efficient feedback scheme with adaptive bit allocation for dispersive MISO channels | IEEE Conference Publication | IEEE Xplore

An efficient feedback scheme with adaptive bit allocation for dispersive MISO channels


Abstract:

In this paper, we focus on a cellular system with M transmit antennas at the base station (BTS) and one receive antenna at the mobile (i.e. an M-input/single-output (MISO...Show More

Abstract:

In this paper, we focus on a cellular system with M transmit antennas at the base station (BTS) and one receive antenna at the mobile (i.e. an M-input/single-output (MISO) channel), where the BTS commands each mobile to transmit its channel state information back to the BTS. Our main result is a specific feedback scheme with adaptive bit allocation, where a binary tree-structured vector quantizer is used to separately quantize each channel tap at a different level of quantization. We show that the proposed feedback scheme allows us to exploit the different statistics of the channel taps and results in a performance very close (within 1dB) to the performance that can be obtained with perfect channel knowledge at the BTS.
Date of Conference: 04-08 September 2006
Date Added to IEEE Xplore: 30 March 2015
Print ISSN: 2219-5491
Conference Location: Florence, Italy

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