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In this paper, the principle of normalized minimum-sum (NMS) polar decoding process is explored. It is demonstrated that with one properly chosen parameters for NMS algorithm, performances approach to that of the sum-product (SP) algorithm can be achieved. As well, the complexity reduction is realized by calculating a linear function instead of nonlinear function. Simulation results for successive...
The dedicated short-range communication (DSRC) plays important role in modern intelligent transportation system. The DSRC standards generally adopt FM0 and Manchester encoding technique to reach dc balance and enhance the signal reliability. Same properties are possessed by Miller and inverted Manchester encoding. Therefore, this two techniques can be added in existing FM0/Manchester encoding module...
Polar codes have a regular-recursive structure, which can efficiently be mapped to hardware for practical applications. A good quantization scheme plays a great important role in hardware implementation. In this paper, three uniform quantizers are designed for successive cancellation (SC) decoding of polar codes based on either optimizing the equivalent channel capacity, cutoff rate or mean-squared...
In this paper, some regular and irregular girth-8 cycle codes with arbitrarily high code rates are presented which have minimum lengths among all girth-8 cycle codes having parity-check matrices of the same row regularity. The parity-check matrices of the constructed girth-8 cycle codes can be considered as the mother matrices of some quasi-cyclic (QC) cycle codes with maximum-achievable girth 24...
A new technique for constructing the Quasi Cyclic Low density Parity Check (QC-LDPC) codes based on splitting rows into sub rows method is proposed. The proposed QC-LDPC code, at BER of 10−6 achieves 0.1dB coding gain over the PEG-LDPC codes. Moreover, in the high Eb / N0 region, the proposed code with girths 16 and 20 respectively, achieve 0.056 dB and 0.27 dB at a BER of 10−5 over the randomly constructed...
As more electronic devices enter our daily life, the demand for more data storage space grows with it at an unprecedented pace. This necessitates a more efficient use of storage space, and real time data compression is one solution. Deflate is one of the most popular methods among lossless data compression algorithms. This algorithm has a high performance and is used in many popular applications....
The hardware implementation of a high speed floating point multiplier with pipeline architecture based on FPGA is presented in the paper. In the design of the floating point multiplier, the utilization of a new radix-4 booth's encoding algorithm, the improved 4:2 compression structure and summation circuit is made to implement the compression of the partial products, and the sum and carry vectors...
In this paper, based on genetic algorithm (GA) an optimization approach is proposed to the arrangement of memory content in group distributed arithmetic (GDA) architecture with low power consumption. According to the information of data such as a kind of image sequence, we take one in the sequence to find an arrangement of memory content to have the near optimal transition activity on the data bus...
In this paper, a memory efficient Fine Grain Scalability (FGS) coefficient encoding method is proposed to reduce the external memory access requirement. In the H.264/AVC Scalable Video Extension, the FGS coefficients encoding is frame based. However, the frame based mechanism results in the difficulty of hardware implementation due to large internal memory requirements and external memory accesses...
Multidestination message passing is attractive in multicast communication because it reduces software overheads at processor nodes effectively. Combining the best features of two existing approaches (tree-based multicasting and multidestination message passing), we propose a novel tree-based multidestination (TBM) multicast scheme, which employs a new efficient multidestination message format. The...
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