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Iterative ICI cancellation based on factor graphs for large FFT sizes

Pello Ochandiano ; Henk Wymeersch (Institutionen för signaler och system, Kommunikationssystem) ; Mikel Mendicute ; Lorena Martinez ; Iker Sobron
Proc. EURASIP European Signal Processing Conference (EUSIPCO) (2011)
[Konferensbidrag, refereegranskat]

This paper focuses on the challenging problem of signal reception for orthogonal frequency division (OFDM) systems in high mobility environments. A novel framework based on the well-known belief propagation (BP) algorithm is pro- posed for joint inter-carrier interference (ICI) cancellation, signal detection and channel decoding. The performance of the mentioned near-optimal detection strategy is analyzed over a general bit-interleaved coded modulation (BICM) system applying low-density parity-check (LDPC) codes. The inclusion of pilot symbols is also considered to analyze how they assist the detection process. A full parallel turbo receptor is derived which shows good performance when the ICI power is high due to high mobility or the use of large FFT sizes.



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Denna post skapades 2011-08-24. Senast ändrad 2016-12-06.
CPL Pubid: 144858

 

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Institutioner (Chalmers)

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

Ämnesområden

Informations- och kommunikationsteknik
Telekommunikationsteori

Chalmers infrastruktur