TY - GEN

T1 - Rate regions for coordination of Decode-and-Forward relays and direct users

A1 - Thai,Chan

A1 - Popovski,Petar

AU - Thai,Chan

AU - Popovski,Petar

PB - IEEE Communications Society

PY - 2012/6/13

Y1 - 2012/6/13

N2 - Recently, the ideas of wireless network coding (NC) has significantly enriched the area of wireless cooperation/relaying. They bring substantial gains in spectral efficiency mainly in scenarios with two–way relaying. Inspired by the ideas of wireless NC, recently we have proposed techniques for coordinated direct/relay (CDR) transmissions. Leveraging on the fact that the interference can be subsequently canceled, these techniques embrace the interference among the communication flows to/from direct and relayed users. Hence, by allowing simultaneous transmissions, spectral efficiency is increased. In our prior work, we have proposed CDR with Decode–and–Forward (DF) relay in two scenarios. In this paper, we extend the two existing regenerative CDR schemes and proposed for the other two scenarios such that all schemes benefit from the aforementioned principle of containing the interference. The<br/>parameters in the schemes are optimized to have the largest rate region or the highest sum-rate. Numerical results show that DF CDR is better than the reference scheme and almost better than AF CDR.

AB - Recently, the ideas of wireless network coding (NC) has significantly enriched the area of wireless cooperation/relaying. They bring substantial gains in spectral efficiency mainly in scenarios with two–way relaying. Inspired by the ideas of wireless NC, recently we have proposed techniques for coordinated direct/relay (CDR) transmissions. Leveraging on the fact that the interference can be subsequently canceled, these techniques embrace the interference among the communication flows to/from direct and relayed users. Hence, by allowing simultaneous transmissions, spectral efficiency is increased. In our prior work, we have proposed CDR with Decode–and–Forward (DF) relay in two scenarios. In this paper, we extend the two existing regenerative CDR schemes and proposed for the other two scenarios such that all schemes benefit from the aforementioned principle of containing the interference. The<br/>parameters in the schemes are optimized to have the largest rate region or the highest sum-rate. Numerical results show that DF CDR is better than the reference scheme and almost better than AF CDR.

KW - cooperative communications

KW - a priori information

KW - interference cancelation

KW - analog network coding

KW - relaying

U2 - 10.1109/ICC.2012.6364628

DO - 10.1109/ICC.2012.6364628

SN - 978-1-4577-2052-9

BT - 2012 IEEE International Conference on Communications (ICC)

T2 - 2012 IEEE International Conference on Communications (ICC)

T3 - I E E E International Conference on Communications

T3 - en_GB

SP - 4468

EP - 4472

ER -