Down link performance for a time division duplex broadcast network

Refined asymptotics for the power normalization constant

Philip Whiting*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

Abstract

A TDD OFDM scheme for broadcasting using a Massive MIMO array to a group of mobiles is considered. Asymptotic formulas are developed (fixed number of users K, M antennas going to ∞) for the constant χM used to normalise the Zero Forcing (ZF) matrix. This quantity is the reciprocal square root of the trace of a generalized Wishart matrix. Its asymptotic distribution is shown to be normal and approximations are obtained for its mean and variance. In some transmission schemes it may be necessary to estimate or track the mean of χ which appears in the channel model after zero forcing. The results show that this quantity varies as the 4th moment of the fading amplitude.

Original languageEnglish
Title of host publication2014 Australian Communications Theory Workshop, AusCTW 2014
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages150-155
Number of pages6
DOIs
Publication statusPublished - 2014
Event2014 Australian Communications Theory Workshop, AusCTW 2014 - Sydney, NSW, Australia
Duration: 3 Feb 20145 Feb 2014

Other

Other2014 Australian Communications Theory Workshop, AusCTW 2014
CountryAustralia
CitySydney, NSW
Period3/02/145/02/14

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