Constrained sequence codes for wireless and optical digital communication systems

用于无线和光数字通信系统的约束序列码

• 批准号: 183622-2009
• 负责人: Fair, Ivan
• 金额: $ 3.35万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2010
• 资助国家: 加拿大
• 起止时间: 2010-01-01 至 2011-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=452407
• 关键词: Constrained; sequence; codes; wireless; optical

Constrained sequence coding is widely used in binary communication systems in order to improve the performance of these systems. These coding techniques do so by ensuring that the encoded sequences have characteristics that, with high probability, will result in their accurate demodulation in the receiver. These characteristics include time-domain constraints such as limits to the maximum and minimum runlengths of like-valued bits, and frequency-domain constraints such a spectral null at one or more predefined frequencies. However, the advantages of constrained sequence codes have not yet been recognized by the designers of wireless systems in which the signaling constellations are larger than binary, nor by the designers of optical OFDM systems in which high peak-to-average power ratios result in signal degradation.

约束序列编码被广泛应用于二进制通信系统中，以改善这些系统的性能。 这些编码技术通过确保编码序列具有将以高概率在接收器中导致其精确解调的特性来实现。 这些特性包括时域约束，诸如对相似值比特的最大和最小游程长度的限制，以及频域约束，诸如在一个或多个预定义频率处的频谱空值。 然而，约束序列码的优点还没有被其中信令星座大于二进制的无线系统的设计者认识到，也没有被其中高峰均功率比导致信号降级的光OFDM系统的设计者认识到。