Design of multiple description scalar quantizers
Design of multiple description scalar quantizers
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DOI：
10.1109/18.256491
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发表时间：
1993-05
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影响因子：
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通讯作者：
V. Vaishampayan
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文献类型：
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作者：
V. Vaishampayan
考虑了使用分集来克服信道损伤的通信系统的标量量化器的设计。将设计问题作为优化问题提出，并推导了最优性的必要条件。开发了一种设计算法，它是 S.P. Lloyd (1962) 量化器设计算法的推广。与单通道标量量化器不同，多描述标量量化器的性能取决于索引分配。解决了索引分配的问题。为无记忆高斯源提供了良好的索引分配、性能结果和样本量化器设计。与多重描述问题的率失真界限进行了比较。 >
The design of scalar quantizers for communication systems that use diversity to overcome channel impairments is considered. The design problem is posed as an optimization problem and necessary conditions for optimality are derived. A design algorithm, a generalization of S.P. Lloyd's (1962) algorithm for quantizer design, is developed. Unlike a single channel scalar quantizer, the performance of a multiple description scalar quantizer is dependent on the index assignment. The problem of index assignment is addressed. Good index assignments, performance results, and sample quantizer designs are presented for a memoryless Gaussian source. Comparisons are made with rate distortion bounds for the multiple description problem. >