The key issue for burst mode DS-CDMA-QPSK receiver is to estimate the reference parameters efficiently as to get the receiver correctly synchronized on short bursts of data.

• 突发模式DS-CDMA-QPSK接收机的主要技术难点突出地体现在多用户干扰和噪声环境下接收机对信道参数的快速估计和同步参数的快速捕获方面。