Institute of Electrical & Electronic Engineers
In this paper, the authors consider general Two-Way Relay Networks (TWRNs) with two source and N relay nodes when neither the source nodes nor the relay nodes have access to Channel-State Information (CSI). A Distributed Differential Space Time Coding with Analog Network Coding (DDSTC-ANC) scheme is proposed. A simple blind estimation and a differential signal detector are developed to recover the desired signal at each source. The Pair-wise Error Probability (PEP) and BLock Error Rate (BLER) of the DDSTC-ANC scheme are analyzed. Exact and simplified PEP expressions are derived, which can be used for power allocation between the source and relay nodes. The analytical results are verified through simulations.