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With the development of 3D audio, distance rendering in multi-channel spatial audio becomes a hot topic of great interest. In this paper, the directional-to-diffuse energy ratio (DDR), a novel relative distance cue, is presented based on Fast Independent Components Analysis (FastICA). DDR is used to trace the relative distance of recreated sound image, by extracting the energy ratio of the directional...
To meet the higher data rate requirement of emerging wireless communication technology, numerous parallel turbo decoder architectures have been developed. However, the interleaver has become a major bottleneck that limits the achievable throughput in the parallel decoders due to the massive memory conflicts. In this paper, we propose a flexible Double-Buffer based Contention-Free (DBCF) interleaver...
This paper presents a scalable and low power low-density parity-check (LDPC) decoder design for the next generation wireless handset SoC. The methodology is based on high level synthesis: PICO (program-in chip-out) tool was used to produce efficient RTL directly from a sequential un-timed C algorithm. We propose two parallel LDPC decoder architectures: (1) per-layer decoding architecture with scalable...
In this paper, we introduced IPGA (improved parallel genetic algorithm), a new parallel genetic algorithm which is based on k1 triangulation of fixed point theory and an injection island approach. This approach guarantees that the processors only generate solutions within their assigned region. And what's more, the k1 triangulation theory is introduced to the genetic algorithm to design convergence...
Based on an improved genetic algorithm, a parallel genetic algorithm is presented and the skeleton implementing is constituted in this paper. The van der Laan-Talman Algorithm is introduced to the genetic algorithm to design convergence criteria objectively and to solve the convergence problem in the later period. The parallel genetic algorithm of multi-body model vehicle suspension optimization is...
A parallel genetic algorithm based coarse-grained module for the optimal design of the flexible multi-body model vehicle suspensions is presented and the skeleton implementing is constituted in this paper. This paper tests the algorithm on the cluster system. The results show that the application of the algorithm presented in this paper outperforms equivalent sequential genetic algorithms for the...
Low-density parity-check (LDPC) codes on par with convolutional turbo codes (CTC) are two of the most powerful error correction codes known to perform very close to the Shannon limit. However, their different code structures usually lead to different hardware implementations. In this paper, we propose a unified decoder architecture that is capable of decoding both LDPC and turbo codes with a limited...
In this paper we present an efficient system-on-chip implementation of a 1-Gbps LDPC decoder for 4G (or beyond 3G) wireless standards. The decoder has a scalable datapath and can be dynamically reconfigured to support multiple 4G standards. We utilize a pipelined version of the layered belief propagation algorithm to achieve partial-parallel decoding of structured LDPC codes. Instead of using the...
With the heavily increase of information cognitive burden, it is urgent for us to find effective visualization tools to grasp the abundant multidimensional and multivariate information in the science, engineering and commerce fields. Star coordinates is a traditional multivariate data visualization technique, with some limitations, e.g. the loss of information, the poor result of visualization and...
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