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Quasi-Static SIMO Fading Channels at Finite Blocklength

Wei Yang (Institutionen för signaler och system, Kommunikationssystem) ; Giuseppe Durisi (Institutionen för signaler och system, Kommunikationssystem) ; Tobias Koch ; Yury Polyanskiy
2013 IEEE International Symposium on Information Theory, ISIT 2013; Istanbul; Turkey; 7 July 2013 through 12 July 2013 (2157-8095). p. 1531-1535. (2013)
[Konferensbidrag, refereegranskat]

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.

Article number 6620483

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Denna post skapades 2013-05-17. Senast ändrad 2016-07-05.
CPL Pubid: 177038


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