METHOD FOR PREVENTING DETERIORATION OF PERFORMANCE IN MULTI-HOP WIRELESS COOPERATIVE TRANSMISSION NETWORK, WIRELESS NETWORK SYSTEM USING THE SAME AND RECORDING MEDIUM FOR THE SAME

摘要

PURPOSE: A performance deterioration prevention method in a multi-hop wireless cooperative transmission network and a wireless communication system using the same are provided to make only normal relay nodes receive signal. CONSTITUTION: A system initializes the maximum SNR(Signal to Noise Raito)(S11). The system establishes the initial decoding group(S12). The system obtains the SNR of a bi-directional relay node and a transmission beam forming vector(S13). If the SNR is bigger than the maximum SNR, the system establishes the calculated SNR as the maximum SNR(S14). The system establishes the decoding group and the transmission beam forming vector as the maximum decoding group and the maximum transmission beam forming vector(S15).