Device and method for detecting activated code channel for TD-SCDMA terminal

Abstract

The invention discloses a device and method for detecting an activated code channel for a TD-SCDMA terminal. The device comprises a spread spectrum code generating module, a scrambling code generating module, a compound spread spectrum code generating module, a multi-cell training sequence channel impulse response input module, a system matrix generating module, a user data input module, a matched filtering data length control module, a matched filtering module; various code channel energy calculation modules after matched filtering, a threshold calculation module, a code channel selecting number control module, an effective code channel selecting module and an effective code channel result output module. The method comprises the steps: controlling length and position of the user data during the operation of the matched filtering by using the matched filtering data length control module to control the selection; and calculating and judging the threshold value of the activated code channel by the threshold calculation module. The device and the method can flexibly control the user data processing according to the requirements on system performance and can design in detail that the effective code channel selects the threshold.

Description

technical field [0001] The invention belongs to the field of mobile communication, and in particular relates to an active code channel detection device and detection method used in a TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, Time Division Synchronous Code Division Multiple Access) terminal. Background technique [0002] In an actual CDMA communication system, a large number of user signals are transmitted simultaneously on each wireless carrier and each transceiver, and there is a certain correlation between each user, which forms multiple access interference. Although the multiple access interference generated by individual users is very small, as the number of users increases or the signal power increases, multiple access interference becomes a major interference in the code division multiple access communication system. The existence of multiple access interference limits the traffic load of each carrier and the spectrum utilization rate of the co...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages of sampling all user data in the prior art that the processing overhead is relatively large and the effective code channel selection threshold processing is not fine enough, and to provide an activated code channel detection device and detection method used in TD-SCDMA terminals. method

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