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In this paper, the downlink non-orthogonal multiple access (NOMA) system with symbol-misalignment is studied where Successive Interference Cancellation (SIC) process is applied at the reciever sides. In doing so, we first induce the channel model of asynchronous NOMA and BER function. After that, the capacity region of synchronous and asynchronous NOMA are obtained respectively. At last, the simulation...
Abstract-Non-binary low-density parity-check (NB-LDPC) codes can achieve better error-correcting performance than binary LDPC codes when the code length is moderate. In this paper, we give the different initial step for different modulation and present a hardware implementation of the extended min-sum (EMS) decoding algorithm for non-binary LDPC codes. Moreover, an FPGA simulation over GF(16) is given...
The dirty paper coding (DPC) can achieve rate region for multicell cooperation system. In this paper, the joint GMDTHP based DPC transmission scheme with user selection for multicell processing is proposed, and the channel condition number based distributed user scheduling algorithm with low complexity is presented. Simulation results shown that the BER performance of the proposed scheme is better...
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