Base Station Asynchronous Method for Wideband Code Division Multiple Access with Short Cycle Extension Gold Code

摘要

The present invention relates to a base station asynchronous method for wideband code division multiple access (hereinafter referred to as " W-CDMA "), a promising candidate multiple access technology for next generation mobile communication.;The present invention distinguishes each base station using different extended gold codes having a length of 2 ⁿ , which is a short cycle, ^{wherein the} extended gold code having the period of 2 ⁿ is allocated to the end of a gold code having a period of 2 ⁿ - 1 Quot; 0 ", and each of the base stations uses two of the extended Gold codes as pilot I and Q code sequences, and in the mobile station after completion of the pilot search, Channel wide band code-division multiple access (W-CDMA) base station asynchronous method using a short-term extended gold code.;The present invention basically does not require synchronization between the base stations and thus does not require a GPS receiver. Therefore, it is easy to install various types of base stations such as macro cell, micro cell and indoor small cell. In addition, since the cross-correlation property for distinguishing each base station is very good, the cycle is short, and the extended gold code that can generate multiple codes simultaneously is used, there is a remarkable effect that the initial system acquisition time of the mobile station is extremely short .