Abstract: Cooperative Relaying based on Compressed Packet(CRCP) was proposed. hhc relay nodes encoded and retransmitted the received packet cooperatively. The number of transmitting slot was decreased and diversity gain combated wireless fading effectively. The spectral efficiency was analyzed in two-hop multiple access channels. The results show that at high SNR regimes, CRCP has the higher spectral efficiency compared with the traditional strategics. At low and medium SNR regimes,CRCP has the much better spectral efficiency in contrast with complex field network coded cooperation based on non-orthogonal transmission(CFNCO-NOT) strategics.

Key words: Relay networks, Cooperative communications, Compression, Spectral efficiency