Using LDPC coding and AMC to mitigate received power imbalance in carrier aggregation communication system

When a carrier aggregation communication system suffers from receiving power imbalance (RPI) in its antenna array due to design flaw, operator’s negligence etc. the system performance may be degraded to an unacceptable level. Specifically in this paper a carrier aggregation communication system with two carrier links while one link suffers RPI is considered, various modulation techniques, such as QPSK, 16 QAM and 64 QAM and/or coding schemes, Convolution Code (CC) and Low Density Parity Check Code (LDPC) are implemented in the system performance simulation to investigate the system behavior when it has the design request to maintain the same system performance in each link when the RPI has values of 7 or 10 dB.