【摘要】 为增加直接序列扩频（Direct sequence spread spectrum,DSSS）系统每秒传输二进制信息的位数，增强信息传输的保密性，建立映射传输机制，提出星座旋转映射的二维信息映射传输方法。在传输一维信息的同时，附加二维信息，利用进制转换与星座图的旋转建立关系模型。通过一维信息与二维信息的传输速率之比选定星座图，进而通过星座旋转映射将二维信息转换为映射信息，获得相应的伪码通道，传输一维信息，同时对二维信息进行映射传输。通过仿真平台测试分析表明，星座旋转映射的二维直扩传输方法与传统直接序列扩频系统相比，能够获得更高的信息传输速率，具有更好的误码性能，能够满足更好保密性能的需求。更多还原

【Abstract】 In order to increase the bits of binary data transmitted per second in direct sequence spread spectrum(DSSS) systems and enhance the security of information transmission, a mapping transmission mechanism is established, and a two-dimensional data transmission method with constellation rotation mapping is proposed. As the one-dimensional data is transmitted, the two-dimensional data is added, and the relationship model is established by using the M-ary conversion and constellation rotation. The constellation is selected according to the ratio between one-dimensional data rate and two-dimensional data rate, and then the two-dimensional data is converted into mapping data by constellation rotation mapping, so as to obtain the corresponding pseudo-code channel and achieve the transmission of one-dimensional data and the mapping transmission of two-dimensional data. The simulation results show that compared with the traditional DSSS system, the two-dimensional data transmission method with constellation rotation mapping can obtain higher data transmission rate and better error code rate performance, as well as meet the requirements of better confidentiality performance.更多还原