A Semidefinite Programming Based Cooperative Relaying Strategy for Wireless Mesh Networks with Relay Signal Quantization

We propose a cooperative relaying strategy for wire- less mesh networks where a set of relay nodes assists forwarding signals from multiple sources to multiple destinations. A semi- definite programming framework is used to ensure target SINRs at the destination are achieved with minimum possible transmit power at the relay layers. The proposed algorithm also considers various level of quantization applied to the messages passed between relays within its optimization framework. The proposed technique has been shown to outperform a non-cooperation based relaying strategy for various values of SINR targets.

[1]  Gregory W. Wornell,et al.  Cooperative diversity in wireless networks: Efficient protocols and outage behavior , 2004, IEEE Transactions on Information Theory.

[2]  Paul Tseng.  Further Results on Approximating Nonconvex Quadratic Optimization by Semidefinite Programming Relaxation , 2003, SIAM J. Optim..

[3]  Yinyu Ye,et al.  Interior point algorithms: theory and analysis , 1997 .

[4]  C.-C. Jay Kuo,et al.  Decode-and-Forward Cooperative Relay with Multi-User Detection in Uplink CDMA Networks , 2007, IEEE GLOBECOM 2007 - IEEE Global Telecommunications Conference.

[5]  Helmut Bölcskei,et al.  Capacity scaling laws in MIMO relay networks , 2006, IEEE Transactions on Wireless Communications.

[6]  Aria Nosratinia,et al.  Coded cooperation in wireless communications: space-time transmission and iterative decoding , 2004, IEEE Transactions on Signal Processing.

[7]  Saeed Gazor,et al.  Distributed peer-to-peer multiplexing using ad hoc relay networks , 2008, 2008 IEEE International Conference on Acoustics, Speech and Signal Processing.

[8]  Zhilan Xiong,et al.  A Cooperative MMSE Relay Strategy for Wireless Sensor Networks , 2008, IEEE Signal Processing Letters.

[9]  Shuzhong Zhang,et al.  Quadratic maximization and semidefinite relaxation , 2000, Math. Program..

[10]  K. Cumanan,et al.  A robust cooperative relaying strategy for wireless networks using semidefinite constraints and worst-case performance optimization , 2008, 2008 International Symposium on Information Theory and Its Applications.

[11]  Chau Yuen,et al.  Bi-Directional Multi-Antenna Relay Communications with Wireless Network Coding , 2008, VTC Spring 2008 - IEEE Vehicular Technology Conference.

[12]  Benoît Champagne,et al.  Cooperative MIMO-beamforming for multiuser relay networks , 2008, 2008 IEEE International Conference on Acoustics, Speech and Signal Processing.

[13]  Michael Gastpar,et al.  Cooperative strategies and capacity theorems for relay networks , 2005, IEEE Transactions on Information Theory.

[14]  Marco Conti,et al.  Mesh networks: commodity multihop ad hoc networks , 2005, IEEE Communications Magazine.

[15]  Jangeun Jun,et al.  The nominal capacity of wireless mesh networks , 2003, IEEE Wirel. Commun..