Title :
A simple rate-1/2 co-decoding scheme for Writing on Dirty Paper
Author :
Mazzotti, Matteo ; Chiani, Marco
Author_Institution :
DEIS, WiLAB, University of Bologna, Via Venezia 52, 47023 Cesena, ITALY. e-mail: mmazzotti@deis.unibo.it
Abstract :
This paper proposes a simple co-decoding scheme for a Writing on Dirty Paper scenario, where the transmitted signal is affected by interference known by the transmitter and thermal noise. We focused on rate-1/2 codes, suitable for low SNR regions, but the scheme is easily generalizable to different code rates. In particular our approach involves a proper combination of an LDPCC and a vector quantizer based on a convolutional code and directly allows for iterative softinformation exchanges between the respective decoders. We show that it is possible to reach BER performance within 1.2-1.3 dB from the correspondent LDPCC´s in AWGN channels. Moreover, the obtained performance are completely unaffected by the amount of interference.
Keywords :
Additive white noise; Bit error rate; Convolutional codes; Gaussian noise; Interference; Iterative decoding; Iterative methods; Signal to noise ratio; Transmitters; Writing;
Conference_Titel :
Communications, 2006. ICC '06. IEEE International Conference on
Conference_Location :
Istanbul
Print_ISBN :
1-4244-0355-3
Electronic_ISBN :
8164-9547
DOI :
10.1109/ICC.2006.255043