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Design and implementation of LT codec architecture with optimized degree distribution

机译:优化度分布的LT编解码器体系结构的设计与实现

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References(10) Cited-By(1) In this paper, we present an architecture for ASIC realizations of the Luby Transform (LT) encoder and decoder. To determine the efficiency of the LT Codec architecture, the encoder and decoder are implemented with a core area of 9mm2 in TSMC 180-nm 1-poly 6-metal and Samsung 130-nm complementary metal-oxide-semiconductor (CMOS) technology. An empirically modified Robust Soliton degree distribution technique is applied for LT Codec implementation and its performance is analyzed in terms of chip area and cycle count. Instead of including a random generator in the register transfer level (RTL) design, we use different look-up tables (LUTs) for degree distribution, edge routing, addressing and inverse edge routing. Therefore, this architecture is efficient for hardware implementation and occupies less area inside the chip. The result shows that an area of 2.3mm2 is required for whole encoder and decoder implementation using TSMC library, of which 0.08mm2 is used for encoder implementation. Finally, a modified Robust Soliton degree distribution technique is presented and evaluated in terms of cycle count for different number of iterations using Tensilica tool. Result shows that it takes very less iterations which is more beneficial for hardware implementation of LT Codec.
机译:参考文献(10)Cited-By(1)在本文中,我们提出了一种用于Luby变换(LT)编码器和解码器的ASIC实现的体系结构。为了确定LT Codec架构的效率,在台积电180-nm 1-poly 6-metal和Samsung 130-nm互补金属氧化物半导体(CMOS)技术中,编码器和解码器的核心面积为9mm2。经验改进的鲁棒孤子度分布技术经过改进,用于LT Codec的实现,并根据芯片面积和周期数分析了其性能。我们不在寄存器传输级别(RTL)设计中包括随机发生器,而是使用不同的查找表(LUT)进行度分布,边缘路由,寻址和反向边缘路由。因此,该架构对于硬件实施是有效的,并且在芯片内部占用的面积较小。结果表明,使用TSMC库实现整个编码器和解码器需要2.3mm2的面积,其中0.08mm2用于编码器的实现。最后,提出了一种改进的鲁棒孤子度分布技术,并使用Tensilica工具针对不同迭代次数对周期数进行了评估。结果表明,它只需很少的迭代,对于LT Codec的硬件实现更为有利。

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