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研究了预去相关及线性单用户检测抗多址干扰技术.由于线性单用户检测抗多址干扰CDMA接收机的解调序列不等同于特征序列本身,考虑到移动通信环境中载波相位的跟踪和估计有时很困难,提出了在混合噪声环境下,差分相干同步CDMA信道中的线性单用户检测抗多址干扰技术的系统结构、算法及特性.提出变革传统CDMA结构及算法的方法,使得系统具有抗多址干扰能力,从而使系统的容量极大化.
Pre-correlation and linear single-user detection anti-MAI technology is studied.As the demodulation sequence of CDMA single-user detection anti-MAI receiver is not equal to the feature sequence itself, taking into account the carrier phase tracking in mobile communication environment and It is sometimes difficult to estimate the system structure, algorithm and characteristics of linear single-user detection anti-MAI technology in differential coherent synchronous CDMA channel in a mixed noise environment. A method to change the traditional CDMA structure and algorithm is proposed, which makes the system have Anti-multiple access interference ability, so as to maximize the capacity of the system.