Ambiguity Mitigating Technique for Cosine-Phased Binary Offset Carrier Signal

作者：Zhou Yanling; Hu Xiulin; Ke Ting; Tang Zuping

来源：IEEE Transactions on Wireless Communications, 2012, 11(6): 1981-1984.

DOI：10.1109/TWC.2012.041612.110531

• Binary offset carrier (BOC) modulation
• global navigation satellite system (GNSS)
• mitigating ambiguity
• bump jump (BJ)

This letter focuses on mitigating ambiguity for cosine-phased binary offset carrier (BOC) modulated signals which are used in the global navigation satellite system (GNSS). The main idea is to use the cross-correlation CCF) of the received cosine-phased BOC signal with the specifically designed local auxiliary signal to counterbalance the undesired side peaks of the received BOC autocorrelation ACF), the final correlation function has only two small positive side peaks which can be rectified by combing with the classical bump jump (BJ) technique easily. The modulated symbol of the local auxiliary signal is derived and simulations show that at the cost of some degradation of detection probability in the acquisition phase the proposed method is better than the traditional BJ method in mitigating the ambiguity for cosine-phased BOC signals, especially when the subcarrier frequency is high and even under multipath interference.

• 出版日期2012-6
• 单位华中科技大学