Uniform quantization structure-based multi-bit spectrum sensing method

• Main Authors: CHEN YONG, YAO FUQIANG, WU HAO, ZHAO HANGSHENG, LIU YONGXIANG
• Format: Patent
• Language: Chinese; English
• Published: 24.12.2014
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION

The invention discloses a uniform quantization structure-based multi-bit spectrum sensing method. The uniform quantization structure-based multi-bit spectrum sensing method comprises the following steps that: firstly, each secondary user establishes a spectrum sensing model, adopts a binary hypothesis test module, and establishes energy-based test statistics; secondly, carrying out uniform quantization, wherein each secondary user determines the basic parameters of a uniform quantizer according to '3*sigma' criterion, that is, determines a quantization level, a quantization initial hierarchy level, a quantization final hierarchy level and a quantization interval, and then carries out quantization processing on the established test statistics; each secondary user analyses the mean value and the variance of the quantization errors of the single secondary user simultaneously; thirdly, a fusion centre establishes a unique judgment rule, establishes uniform test statistics and judgement rule after collecting the q