Title :
Decode-based differential modulation for wireless relay networks
Author :
Zhao, Qiang ; Li, Hongbin
Author_Institution :
Dept. of Electr. & Comput. Eng., Stevens Inst. of Technol., Hoboken, NJ, USA
Abstract :
In this paper, we develop a differential binary phase shift keying (BPSK) modulation scheme for wireless relay networks composed of one source, one relay and one destination node. The proposed scheme, referred to as the differential decode-and-forward (DDF), utilizes the relay to assist data transmission from the source to the destination. We derive a maximum likelihood (ML) detector and a piece-wise linear (PL) detector for the proposed DDF scheme. A closed-form bit error rate (BER) expression is presented for the proposed PL detector. Both analytical and simulation results show that the proposed DDF scheme is capable of providing diversity gain at the destination node over Rayleigh fading channels.
Keywords :
Rayleigh channels; differential phase shift keying; diversity reception; error statistics; maximum likelihood detection; piecewise linear techniques; BER; BPSK; DDF; Rayleigh fading channels; bit error rate; decode-based differential modulation; destination node diversity gain; differential binary phase shift keying; differential decode-and-forward scheme; maximum likelihood detector; piece-wise linear detector; relayed data transmission; wireless relay networks; Analytical models; Binary phase shift keying; Bit error rate; Data communication; Detectors; Maximum likelihood decoding; Maximum likelihood detection; Phase modulation; Piecewise linear techniques; Relays;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2005. Proceedings. (ICASSP '05). IEEE International Conference on
Print_ISBN :
0-7803-8874-7
DOI :
10.1109/ICASSP.2005.1415759
