Phase estimation with the aid of soft output from turbo decoding

L Zhang, A Burr

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

Abstract

This paper proposes a carrier phase recovery approach when turbo-codes are used. The phase estimation is implemented with the aid of the extrinsic information from the turbo decoder. A series of look-up tables are pre-computed to reduce the computation complexity, and thereby we avoid introducing delay to the decoding. Simulations are carried out both in BPSK and QPSK systems. If the block size is 1024, phase error up to 82degrees in a BPSK system, and up to 37degrees in QPSK system can be removed completely. Compared with the conventional method, which has separate phase recovery and decoding, this approach exhibits a great improvement. The effect of block size is also considered. The results demonstrate that the longer the block size, the better the performance.

Original languageEnglish
Title of host publicationIEEE 54TH VEHICULAR TECHNOLOGY CONFERENCE, VTC FALL 2001, VOLS 1-4, PROCEEDINGS
Place of PublicationNEW YORK
PublisherIEEE
Pages154-158
Number of pages5
ISBN (Print)0-7803-7005-8
Publication statusPublished - 2001
Event54th IEEE Vehicular Technology Conference (VTC 2001) - ATLANTIC CITY
Duration: 7 Oct 200111 Oct 2001

Conference

Conference54th IEEE Vehicular Technology Conference (VTC 2001)
CityATLANTIC CITY
Period7/10/0111/10/01

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