  In this paper, we consider the application of Reed- Solomon (RS) channel
coding for joint error correction and cooperative network coding on non-binary
phase shift keying (PSK) modulated signals. The relay first decodes the RS
channel coded messages received each in a time slot from all sources before
applying network coding (NC) by the use of bit-level exclusive OR (XOR)
operation. The network coded resulting message is then channel encoded before
its transmission to the next relay or to the destination according to the
network configuration. This scenario shows superior performance in comparison
with the case where the relay does not perform channel coding/decoding. For
different orders of PSK modulation and different wireless configurations,
simulation results demonstrate the improvements resulting from the use of RS
channel codes in terms of symbol error rate (SER) versus signal-to-noise ratio
(SNR).
