V-BLAST OFDM信号调制识别算法

Modulation Recognition for V-BLAST OFDM Signals

提出了基于高阶累积量的V-BLASTOFDM信号识别算法,用以区分频率选择性衰落信道条件下V-BLAST结构的多载波信号(OFDM)和单载波信号(MFSK、MPSK、MQAM)。该算法不需要预先知道信号的载波频率、波特率以及信道的先验信息,直接在中频对信号进行识别处理。仿真结果表明该算法具有良好的识别性能。

Based on high - order cumulants （HOC）, a novel recognition algorithm is proposed for V - BLAST （Vertical Bell Labs Layered Space - Time） OFDM （Orthogonal Frequency - Division Multiplexing） signals to distinguish multi - carrier modulated signals（0FDM） from single - carrier modulated signals（MFSK, MPSK and MQAM）. The proposed algorithm directly processes intermediate frequency signals without the prior information about the carrier frequency and symbol rate of the transmit signal and the channel. Simulation results confirm the validity of the proposed algorithm.