Key Technologies Of Communication And Location Complex Systems Based On Complement Sequences

A novel kind of complex system which can realize location and spread spectrum communication simultaneity is proposed in order to meet the location and communication on efficiency and location precision as well as location scope. According to the different applying occasions and communication channels, this paper designs three kinds of complex systems that are m_W sequence complex system, ccs complex system and mccs complex system which selections of inside sequence are different.The relationship between m_W sequence correlation and Walsh sequence rate and the correlation performance comparison between m_W sequence, m sequence and Walsh sequence are emphasized in the basis of the performance analysis of m_W sequence complex system. The ccs complex system and mccs complex system which selected ccs and mccs as the inside sequence respectively are proposed. The performance of suppression interference and noise is analyzed mostly, that proved the outstanding performance of mccs complex system to suppress the multi-path interference.The complex system applies CCC algorithms to capture the inside sequence and ROTH algorithms to capture the outside sequence using the DS clc -correlation characteristic in order to improve the precision and robustness of TDO A estimation.A novel acquisition algorithm (two-step acquisition algorithm) is proposed because of the special configuration of the multi-sequence. The match filter plus sequence estimation mode and match filter plus glide correlation mode are applied to capture the different multi-sequence. At the same time, the performance of the algorithm is analyzed.According as the demand of complex system, this paper designs a feasible implement project that is multi-DSP scheme.