δ/θ型基带相关检测/解扩方案

δ/θ Base Band Correlation Detection/Despreading Scheme

基于抗干扰的基本原理,提出了"相关解扩三要素",从而形成了δ/θ型基带相关解扩方案。其特点是:当经典基带相关解扩有效时,本方案同样有效;当经典失效时,本方案仍部分有效。相关解扩的内核——相关函数的计算量减少了约99.61%,因而,较经典相关解扩,以同一数量级提高了解扩的速率和信道的利用率,减小了ASIC/数字集成化的面积,降低了成本,缓解了大容量高速率综合业务扩频传输与扩频带宽及其电源的矛盾。

Based on the basic principle of anti-interference, the three factors necessary for the correlation despreading are suggested, thus forming δ/θ-type base band correlation detection/despreading scheme. It has following characteristics： when the classic base band correlation despreading is effective, the scheme is equally effective, and when the classic fails, the scheme is still effective partly. The correlation despreading kernel or the calculation of the correlation function is reduced by about 99.61%, and thus improving the rate of the despreading and the use rate of the signal channel, reducing the area of ASIC/digital integrated, lowering the contradictions between the high-speed integrated service transmission and the power, with the same order of magnitude.