Improving Network Coded Cooperation by Soft Information

Date Added: Aug 2009
Format: PDF

Bit-wise XOR network coding has been shown to perform well in cooperative wireless transmission because of its simple coding operation and overall robustness increase due to combining of several messages. The authors' aim is to develop a cooperation protocol that uses basic and easy to implement operations but still combines the messages well and achieves good performance. For this purpose, they modify the conventional network-coded cooperation protocol to work with soft information using low complexity operations. They analyze the performance by first deriving a closed form Bit Error Rate (BER) approximation and then verify its correctness by simulation.