提出了一种可以有效地实现用户高数据率传输的卷积编码正交扩频多码ＣＤＭＡ系统．此系统对于用户传输的高速率数据首先进行串－并转换，变换后的低数据流再进行卷积编码，然后再进行正交序列扩频调制．各支路扩频信号用同一载波进行调制发送．对此系统在加性高斯噪声信道的性能计算和数值结果进行了分析． A convolutional code orthogonal spread spectrum multi-code CDMA system which can effectively transmit data at high data rate is proposed. The system for the user to transfer high-speed data first serial - and conversion, transform the low data stream then convolutional encoding, and then the orthogonal sequence spread spectrum modulation. Each branch spread spectrum signal modulation using the same carrier to send. The performance of the system in additive Gaussian noise channel and its numerical results are analyzed.