An Expression for the Average Quantization Error

Authors:
Saralees Nadarajah
Affiliations:
University of Manchester, Manchester, UK M13 9PL
Venue:
Wireless Personal Communications: An International Journal
Year:
2009

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Abstract

The quantization error for MIMO (multiple-input multiple-output) downlink channels is known to be the minimum of independent and identically distributed beta random variables. In this note, an exact expression is derived for the average quantization error. Computational issues relating to its correctness, usage and approximations are discussed.