Multiuser Two-Way Relaying: Detection and Interference Management Strategies

Date Added: Aug 2009
Format: PDF

The authors consider a multiuser two-way relay network where multiple pairs of users communicate with their preassigned partners, using a common intermediate relay node, in a two-phase communication scenario employing Code Division Multiple Access (CDMA). By taking advantage of the bidirectional communication structure, they first propose that each pair of partners share a common spreading signature and design a Jointly Demodulate-and-XOR Forward (JD-XOR-F) relaying scheme, where all users transmit to the relay simultaneously followed by the relay broadcasting an estimate of the XORed symbol for each user pair.