System and method for multi-path combining control of RAKE receiver in third-generation mobile communication system

A mobile communication system and receiver technology, applied in the field of wireless communication systems, can solve the problems of reduced system detection performance for user information, incomplete channel estimation, and reduced signal-to-noise ratio, etc., to achieve stable and reliable working performance and simple system structure Clarity, bit error rate reduction effect

Active Publication Date: 2011-08-03
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology

[0006] However, the actual channel estimation is not completely accurate. If an inappropriate multipath is added, the signal-to-noise ratio of the additional multipath will decrease, and the error of the channel estimation will increase, which will reduce the detection performance of the system for user information

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  • System and method for multi-path combining control of RAKE receiver in third-generation mobile communication system
  • System and method for multi-path combining control of RAKE receiver in third-generation mobile communication system
  • System and method for multi-path combining control of RAKE receiver in third-generation mobile communication system

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Embodiment Construction

[0050] In order to understand the technical content of the present invention more clearly, the following examples are given in detail.

[0051] see image 3 As shown, in this third generation mobile communication system, the system for realizing RAKE receiver multipath combining control, its main feature is that the described system includes:

[0052] (1) search module, carry out the search of the search path that has enough signal-to-noise ratio in the wireless channel;

[0053] (2) multipath demodulation module, be connected with described search module, carry out the despreading and demodulation of multipath signal acquisition, multipath selection and multipath signal;

[0054] (3) The multipath merging module is connected with the multipath demodulation module, and the demodulated multipath signals are combined according to the system preset merging algorithm; the system preset merging algorithm can be maximum ratio merging algorithm;

[0055] (4) search control module,...

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Abstract

The invention relates to a system for realizing multi-path combining control of an RAKE receiver in a third-generation mobile communication system. The system comprises a search module, a multi-path modulation module, a multi-path combining module, a search control module, a multi-path search control module and a multi-path tracking module. The invention also relates to a method for realizing the multi-path combining control of the RAKE receiver in the third-generation mobile communication system based on the system. By adopting the system and the method for the multi-path combining control of the RAKE receiver in the third-generation mobile communication system, the number of multi-path signals of the multi-path combining module before combining the multi-path signals can be effectively controlled and multi-path energy with strongest energy can be ensured to enter the multi-path combining module so that the modulation module can decode correct user information, the error rate of the user information is reduced, the receiving performance of the system is improved, the error rate is reduced by over 80 percent compared with that in the method in the prior art, simultaneously the system has a simple and clear structure, rapidness and convenience of processing process, stable and reliable work performance, and wide application range.

Description

technical field [0001] The present invention relates to a wireless communication system, in particular to the technical field of code division multiple access (CDMA, Code Division Multiple Access) of the third generation mobile communication system, and specifically refers to a third generation mobile communication system RAKE (Rake) receiver multiple System and method for path merge control. Background technique [0002] In mobile communication, one of the main characteristics of wireless channels is multipath transmission. Due to the influence of surrounding buildings and terrain, different paths and time delays will inevitably occur in radio wave propagation, causing fluctuations and fading of signals received by receiving devices. For mobile communication systems using other technologies, only complex resistance technologies can be used to reduce the impact. For mobile communication systems using CDMA technology, due to the correlation characteristics of CDMA, as long a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/7115
Inventor 许大山罗宗潮
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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