  Block codes are typically not used for fading channels as soft decision
decoding is computationally intensive and hard decision decoding results in
performance loss. In this paper we propose a diversity preserving hard decision
decoding scheme for parity check codes (PCC) over Rayleigh fading channels. The
proposed flip decoding scheme has linear complexity in the block length.
Theoretical analysis and simulation results verify the correctness of the
proposed detection scheme.
