一种TD-SCDMA多载波信号接收滤波的快速方法

A Fast Filtering Scheme of TD-SCDMA Multi-carrier Signal

文中提出了一种TD-SCDMA多载波信号采样滤波的快速滤波方法。该方法优化了传统的多载波滤波方法,将TD-SCDMA多载波信号特点和滤波器组理论相结合,具有传统滤波方法相同的性能,但运算复杂度不到传统方法的一半。这种快速滤波方法具有运算复杂度低,可并行和可先下采样再滤波的优点,适合硬件实现,可以用于TD-SCDMA多载波接收机的低功耗设计。

A fast filtering scheme is proposed to filter the TD-SCDMA multi-carrier signal. The scheme optimizes the traditional TD-SCDMA multi-carrier filtering scheme by combining the TD-SCDMA multi-carrier character with the filter bank theory. It reduces the filter complexity to less thanhalfofthe traditional filter while maintains the same performance. The fast filtering scheme has the merits of low complexity, parallel structure and down-sampling before filtering, thus making it favorable for ASIC implementation. It could be applied in the design of low-power TD-SCDMA multi-carrier receiver.