In Additive White Gaussian Noise (AWGN) channel, we introduce a method for synchronization of symbol timing and frequency for two-dimensional spread spectrum system without prior knowledge of spread spectrum matrix.

• 摘要针对加性白高斯噪声信道，考虑未知二维扩频矩阵的条件下，提出了一种二维扩频系统的时频同步方法。