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In this paper, we propose two low-complexity decoding algorithms for systematic binary deterministic rateless codes. One is based on segmentation available for large information block. Segmentation-based decoding algorithm can dramatically reduce the complexity on solving inverse of matrix, which dominates the complexity of decoding. Another is based on enumeration for small information block. Enumeration-based...
Multiple-input multiple-output (MIMO) single carrier frequency division multiple access (SC-FDMA), which combines the advantage of spatial and frequency diversities with frequency domain equalizers (FDE), has drawn great attention recently. Among all possible detection techniques, maximum-likelihood detection (MLD) is optimal, but its exponentially computational complexity precludes its use in practical...
We investigate the design and use of systematic binary deterministic rateless (BDR) codes for information transmission over block-erasure broadcast channels. BDR codes are designed to obtain a level of maximal distance separable (MDS) properties, making these codes ideal for the considered broadcast scenario. For a certain number of encoded redundancy blocks, we derive an expression for the probability...
In this paper, a soft output precoded space-time block coded (STBC) Gaussian minimum shift-keying (GMSK) system with two transmit antennas and one receive antenna is proposed. The memory of the continuous phase modulation (CPM) signal is eliminated by precoding, but it will result in inter-symbol interference (ISI). The turbo detection and decoding receiver with a linear SISO detector based on MMSE...
Low density parity check (LDPC) codes can be applied to IDMA system, called LDPC-coded IDMA system, which is presented recently for combing the advantages of LDPC and IDMA. However, the high complexity for decoding and detection remains a problem. In this paper, a simplified receiver structure is proposed for LDPC-coded IDMA system. The main idea is based on a switch between LDPC and repetition code...
Cooperative diversity has recently emerged as novel communication scheme for future wireless communications because of diversity gain, which is achieved by sharing each cooperative user's antenna to form a virtual antenna array in the wireless network. Previous works on analysis of system performance of cooperative networks mainly focused on static scenarios. In this paper, we derive exact average...
This paper proposes a low complexity differential modulation scheme for multiple-antenna systems where neither the transmitter nor the receiver knows channel knowledge. Our scheme is based on quasi-orthogonal codes. We consider a wireless system with four transmit antennas. At the transmitter, symbol pairs are jointly mapped to construct quasi- orthogonal codes and the codes are used to perform differential...
This paper proposes a differential modulation scheme using amplitude-phase shift keying (APSK) signals for distributed MIMO systems where neither the transmitter nor the receiver knows channel knowledge. The bandwidth efficiency of the proposed scheme is the same as V-BLAST scheme, and it can be applied to the systems with any number of transmit and receive antennas. Simulation results show that the...
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