Orthogonal code design for MIMO amplify-and-forward cooperative networks

Abstract

Abstract-This paper is on the design of practical distributed space-time codes for wireless relay networks with multiple antennas terminals. The amplify-and-forward scheme is used in a way that each relay transmits a scaled version of the linear combination of the received symbols. We propose distributed orthogonal space-time codes which are distributed among the source node's antennas and relays. Using linear orthogonal decoding in the destination makes it feasible to employ large number of potential relays to improve the diversity order. Assuming multiple amplitude modulation, we derive a formula for the symbol error probability of the investigated scheme over Rayleigh fading channels. Our analytical results have been confirmed by simulation results, using full-rate, full-diversity distributed codes.

Distributed GABBA space-time codes in amplify-and-forward relay networks

“…Distributed space-time coding was generalized to networks with multipleantenna nodes in [53], and the design of practical DSTCs with multiple antennas terminals has also been recently considered in [48,54,55]. In [54,55], which due to the space limitation we have not included them in this thesis, the orthogonal and quasi-orthogonal space-time design is used for A&F based wireless relay networks with multiple-antenna nodes.…”

“…In [54,55], which due to the space limitation we have not included them in this thesis, the orthogonal and quasi-orthogonal space-time design is used for A&F based wireless relay networks with multiple-antenna nodes.…”

Opportunistic relaying for space-time coded cooperation with multiple antennas terminals

“…and using the normalization assumed in (2), we have E s [S H S] = I NsR . For designing the distributed orthogonal space-time codes in multiple-antenna relay netowrks, one can see [30].…”