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5G sets stringent requirement on delay, which means large packets have to be segmented into shorter ones. However, the gain of turbo coding can be severely degraded due to short code size. In this paper, a novel coding and encoding scheme is proposed to obtain high coding gain under short size. The idea is to encode multiple short code blocks cooperatively to obtain a long code size. In the process...
Channel coding for the next generation communication system needs to support higher data throughput and transmission rate. Due to the inherent parallel feature, low density parity check (LDPC) codes comply with the target. In this paper, we propose a complete channel coding scheme based on structured LDPC codes. In our design, the correlation among different parity check matrices for different code...
In this paper, we study iterative detection algorithms of the multi-cell multi-user massive MIMO systems with pilot contamination. First, a iterative algorithm applying soft decision interference cancellation is introduced. It is based on minimum mean square error (MMSE) filter and derived from [1] where it was applied in block transmission. Then, by considering the algorithm complexity, two iterative...
In this paper, we propose a novel iterative approach to bidirectional decision feedback equalization (Bi-DFE). Bi-DFE performs two equalizations, one on the received signal and another on its time-reversed version. The arbitration for the forward and reverse DFEs is decided by minimum path metric in bidirectional Viterbi decoder. In order to further improve the performance of the Bi-DFE, iterative...
Low complexity space-frequency turbo detection and decoding schemes are proposed for multi-user space-time block-coded (STBC) block transmission systems, including cyclic prefix based single-carrier block transmission (CP-SCBT) system and OFDM system. Using the algebraic properties of these systems, we give the implementation of MMSE- and match-filter-based (MF) turbo detector in the frequency domain...
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