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Signal degradation in indoor wireless communication systems is often occurred because of random changes in attenuation within the transmission medium. Such signal perturbations are referred to as fading and it may affect the bit error probability (BEP) performance of the system tremendously. To alleviate this degradation, we propose a system, regular low density parity check (LDPC) coded16-ary amplitude phase shift keying (16-APSK) with coherent detection assuming the four-ray Rayleigh fading model as well as the effect of delay spread. Simulation results assert that with the aid of regular LDPC code, the effect of fading has been considerably mitigated, thus the proposed system could easily approach the expedient BEP. Further results of BEP comparisons are also provided between the proposed system and the conventional three-ray fading model.

journal of engineering and architecture

Minimization of the Fading Effect in Indoor Wireless Communication using Coherent 16- Amplitude Phase Shift Keying with Regular Low Density Parity Check Code