Maximizing Sum-Rate for Multi-User Two-Way Relaying Networks with ANC Protocol

In this paper we study the resource allocation problem for an OFDMA based cooperative two-way relaying (TWR) network. We focus on amplify and forward (AF) analog network coding (ANC) protocol. An optimization problem for two basic resources namely, sub-carrier and power is formulated for multi-user TWR networks. A joint optimal optimization problem is investigated and two-step low complexity sub-optimal resource allocation algorithm is proposed for multi-user TWR networks with ANC protocol. The proposed algorithm has been evaluated in term of total achievable system sum-rate and achievable individual sum-rate for each userpair. The good tradeoff between system sum-rate and fairness is observed in the two-step proportional resource allocation scheme.

Authors:

• Muhammad Abrar
• Xiang Gui
• Amal Punchihewa

Keywords:

• Relay Network
• Relay Protocols
• Resource Allocation
• Two –way relaying.

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