Quasi-Static SIMO Fading Channels at Finite Blocklength
Paper i proceeding, 2013

We investigate the maximal achievable rate for a given blocklength and error probability over quasi-static single-input multiple-output (SIMO) fading channels. Under mild conditions on the channel gains, it is shown that the channel dispersion is zero regardless of whether the fading realizations are available at the transmitter and/or the receiver. The result follows from computationally and analytically tractable converse and achievability bounds. Through numerical evaluation, we verify that, in some scenarios, zero dispersion indeed entails fast convergence to outage capacity as the blocklength increases. In the example of a particular 1*2 SIMO Rician channel, the blocklength required to achieve 90% of capacity is about an order of magnitude smaller compared to the blocklength required for an AWGN channel with the same capacity.


Wei Yang

Chalmers, Signaler och system, Kommunikation, Antenner och Optiska Nätverk

Giuseppe Durisi

Chalmers, Signaler och system, Kommunikation, Antenner och Optiska Nätverk

Tobias Koch

Universidad Carlos III de Madrid

Yury Polyanskiy

Massachusetts Institute of Technology (MIT)

IEEE International Symposium on Information Theory - Proceedings

21578095 (ISSN)

1531-1535 6620483
978-147990446-4 (ISBN)


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