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Sequential decoding of tailbiting convolutional codes for packet data on Rayleigh fading channels

Pål Orten (Institutionen för signaler och system, Kommunikationssystem)
Proceedings FRAMES Workshop, Delft, The Netherlands p. 267-272. (1999)
[Konferensbidrag, refereegranskat]

Sequential decoding of long constraint length convolutional codes is proposed for hybrid automatic repeat request packet data transmission on a Rayleigh fading channel, and computational complexity (the timeout condition) is applied for error detection. In order to improve the throughput, tailbiting codes are used. Furthermore, a method for estimating the initial state of the encoder is described, and for most packet lengths this scheme yields negligible loss compared to the case with a known tail. Although interleaving must be performed over one packet only, high throughput is maintained also for correlated fading. A throughput of 0.90 at a signal to noise ratio per coded bit of 15 dB shows this coding scheme to be competitive for wireless packet data services.

Nyckelord: error-control

Denna post skapades 2006-09-12. Senast ändrad 2013-06-14.
CPL Pubid: 15962


Institutioner (Chalmers)

Institutionen för signaler och system, Kommunikationssystem (1900-2017)


Information Technology

Chalmers infrastruktur