Performance analysis for two-way lossy-forward relaying with random Rician K-factor

Abstract

A novel lossy-forward (LF) cooperative communication scheme based on the decode-and-forward (DF) protocol allowing source-relay link errors is proposed recently. The LF relaying scheme always allows the relay to forward the decoded information to the destination even though it may contain errors. The knowledge of the correlation between received information sequences is exploited in the decoding process at the destination to improve the system performance. In this paper, we derive exact expressions of the outage probability upper bound for a two-way LF relay system over Rician fading channels with random K-factor. The K-factor follows empirical distributions derived from measurement data. It is found that the two-way relaying with LF is superior to that with DF scheme in terms of the outage performance. Keywords: outage probability, two-way relaying, lossy-forward, random K-factor, multiple access channel (MAC) Classification: Wireless Communication Technologies References[1] M. Chen and A. Yener, "Power allocation for F/TDMA multiuser two-way relay networks," IEEE Trans.

A Tutorial on Lossy Forwarding Cooperative Relaying

“…With the recognition of its usefulness, the two-way relay network has been intensively investigated with the aim of its applications to wireless communications [74], [113]- [115]. For example, two sources intend to ensure their information exchange via a common intermediate relay node in addition to the direct links between them, as illustrated in Fig.…”

“…Applying LF relaying to two-way relay network with direct link was initially studied in [74] under the assumption that the relay works in half-duplex mode while the sources work in full-duplex mode. The first time-slot transmission is a two-user MAC, while the second time-slot transmission is the broadcast of XoRed copy from the relay.…”

“…Therefore, the achievable rate region can be formulated by source coding with a helper. The outage probability is derived to show its superiority over its DF counterpart in [74]. Selected publications on the two-way relay network classified based on half-and/or full-duplex relaying strategies are provided in Table VI. Data rate fairness constraint assumes that the rates of both sources are identical in the information exchange.…”

“…In this tutorial paper, we have provided a comprehensive survey on the achievable rate regions and outage analyses [125] Full duplex AF and DF Orthogonal and non-orthogonal Sum rate, average rate, and outage probability [127], [128] Half duplex AF Orthogonal Average mutual information and outage probability [74] Half duplex and full duplex LF Orthogonal and non-orthogonal Outage probability…”

“…The LF principle can also be applied to more complicated relaying networks, e.g., two-way relay network [74] and general multi-source multi-relay network [75], [76].…”