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This paper proposes a relay selection (RS) scheme that aims to improve the end-to-end symbol error rate (SER) performance of a two-way relay network (TWRN). The TWRN consists of two single-antenna sources and multiple relays employing a decode-and-forward (DF) protocol. It is shown that the SER performance is determined by the minimum decision distance (DD) observed in the TWRN. However, the minimum...
In this paper, a MIMO-Y channel based three-group information exchange problem is considered, where users from each group would like to exchange information with the other users in another two groups. In particular, a Max-Min user selection is proposed, which aims to harvest the multiuser diversity gain for reliable transmission in the MIMO-Y channel. The impacts of user configurations on the multiuser...
In this paper, a round-robin based relay protocol (R3P) is proposed to provide full cooperative diversity in a cooperative communication system. Distinct from traditional relay protocols which also yield full cooperative diversity, R3P is based on round-robin scheduling, thus avoids relay selection and requires no global channel statistic information (CSI) at the destination. R3P can therefore be...
In this paper, a novel dual XOR hybrid automatic retransmission request scheme XOR^2-HARQ is proposed for wireless broadcasting. Distinct from the traditional network coding (NC) based HARQ (NC-HARQ), an additional XOR operation is introduced to dynamically combine lost packets from the individual receiver instead of conducting XOR operation only across lost packets from different receivers. Furthermore,...
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