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CDMA up special physical information channel multi-user receiving apparatus

A dedicated physical and user technology, applied in the communication, electrical components, transmission system and other directions between multiple stations, it can solve the limited improvement of CDMA system capacity, coverage and performance, and cannot improve the capacity and coverage of CDMA system well. and performance issues

Inactive Publication Date: 2007-10-10
HUAWEI TECH CO LTD
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  • Abstract
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Problems solved by technology

However, whether it is multi-user detection technology, or smart antenna technology and HSDPA technology, the improvement of the uplink capacity, coverage and performance of the CDMA system is very limited, and it cannot improve the uplink capacity, coverage and performance of the CDMA system very well.

Method used

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  • CDMA up special physical information channel multi-user receiving apparatus
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Embodiment Construction

[0065]In order to make the object, technical solution and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0066] Combining the multi-user detection technology and the smart antenna technology together, a double-layer weighted parallel interference cancellation method under multi-beam can be obtained.

[0067] FIG. 1 is a schematic flow chart of a double-layer weighted parallel interference cancellation method under multi-beams. As shown in Figure 1, it includes the following steps:

[0068] Step 101: receiving the antenna element signal, the smart antenna system has several array elements, wherein the antenna element signal is the multipath fading signal received by the antenna element;

[0069] Step 102: Form several beam signals of each user according to the received antenna element signals, and the number of the several beam signals is...

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Abstract

The present invention proposes multiuser receiver specially for upwards physical information in CDMA system. The present invention applies double-layer weighting parallel interference-eliminating method under multiple beam condition in special upwards physical channel of high speed data service and fuses intelligent antenna technology, high speed data package access technology and multiuser detecting technology together, so as to realize the multiuser receiver specially for upwards physical information in CDMA system. The device of the present invention has greatly raised upwards capacity, coverage and performance of CDMA system.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a code division multiple access (CDMA) uplink dedicated physical channel multi-user receiving device. Background technique [0002] The CDMA system has become the development direction of the third generation mobile communication because of its advantages of high capacity, high service quality and good security. CDMA systems rely on signature codes to distinguish users, which will cause two problems in the mobile communication environment, namely multipath interference and multiple access interference (MAI). The invention of RAKE receiving technology enables single-user receivers to use multipath components to generate multipath diversity gain, while MAI limits the improvement of CDMA system capacity, coverage and performance. The single-user receiver cannot eliminate the influence of MAI on user signal detection, and the detection performance of the receiver will...

Claims

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Application Information

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IPC IPC(8): H04B1/707H04B7/005H04B7/26
CPCH04B1/71075
Inventor 魏立梅
Owner HUAWEI TECH CO LTD
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