Title :
A class of cooperative communication protocols for multi-node wireless networks
Author :
Sadek, Ahmed K. ; Su, Weifeng ; Liu, K. J Ray
Author_Institution :
Dept. of Electr. & Comput. Eng., Maryland Univ., College Park, MD, USA
Abstract :
In this paper, a class of cooperative communication protocols with arbitrary N-relay nodes is proposed for wireless networks, in which each relay coherently combines the signals received from the source and m (1≤m≤N-1) previous relays. Exact symbol-error-rate (SER) expressions for an arbitrary N-node network employing MPSK or QAM modulation are derived. Also an approximate expression for the SER, that is tight at high SNR, is provided. Furthermore, an optimal power allocation problem based on minimizing the asymptotically tight SER expression is formulated. Closed form solutions for the optimal power allocation problem are provided for some network topologies.
Keywords :
error statistics; phase shift keying; quadrature amplitude modulation; radio networks; telecommunication network topology; MPSK; QAM modulation; SER; arbitrary N-relay node; cooperative communication protocol; minimization; multiple phase shift keying; network topology; power allocation problem; quadrature amplitude modulation; symbol-error-rate expression; wireless network; Ad hoc networks; Cyclic redundancy check; Decoding; Educational institutions; MIMO; Performance analysis; Quadrature amplitude modulation; Relays; Wireless application protocol; Wireless networks;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 2005 IEEE 6th Workshop on
Print_ISBN :
0-7803-8867-4
DOI :
10.1109/SPAWC.2005.1506202
