Method for receiving signal as well as receiver, method for combining signal as well as module

A signal receiving and receiver technology, applied in the field of communication, can solve problems such as poor performance and irrelevance, and achieve the effect of improving performance

Inactive Publication Date: 2008-10-01
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] There are two prerequisites for the establishment of the above formula: 1. Regardless of the correlation between the two paths, each path is considered to be independent; 2. The noise energy of each path is the same
[0009] And the inventor finds in the process of realizing the present invention: under multipath and high rate service, formula R=R 1 ×H 1 * +R 2 ×H 2 * The two preconditions for the establishment cannot be satisfied in most cases, so under multipath and high-speed services, the performance of the existing RAKE receiver will be relatively poor

Method used

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  • Method for receiving signal as well as receiver, method for combining signal as well as module
  • Method for receiving signal as well as receiver, method for combining signal as well as module
  • Method for receiving signal as well as receiver, method for combining signal as well as module

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Embodiment 1

[0026] figure 1 Shown is Embodiment 1 of a signal receiving method provided by an embodiment of the present invention, including:

[0027] Step 101: Receive a baseband I / Q signal, perform multipath search and IF noise estimation, and obtain the antenna numbers, path positions, path energy, and IF noise of L real paths.

[0028] Step 102: Perform multipath calculation and allocation according to the antenna numbers, path positions, and path energy of the L real paths, to obtain the path positions and multipath positions of the L real paths.

[0029] Step 103: Perform descrambling and despreading according to the baseband I / Q signal and the path positions of the L real paths, to obtain the L real path DPCCH descrambling and despreading signals and the L real path DPDCH descrambling and despreading signals. .

[0030] Step 104: Perform channel estimation according to the L real paths DPCCH descrambled and despread signals to obtain fading factors of each path.

[0031] Step 10...

Embodiment 2

[0038] figure 2 Shown is Embodiment 2 of a signal receiving method provided by an embodiment of the present invention, including:

[0039] Step 201: Receive a baseband I / Q signal, perform multipath search and IF noise estimation, and obtain the antenna numbers, path positions, path energy, and IF noise of L real paths.

[0040] Step 202: Perform multipath calculation and allocation according to the antenna numbers, path positions, and path energy of the L real paths, to obtain the path positions of the L real paths, the path positions of the M imaginary paths, and the multipath positions.

[0041] Step 203: Perform descrambling and despreading according to the baseband I / Q signal, the path positions of the L real paths and the path positions of the M imaginary paths, and obtain the L real paths DPCCH descrambling and despreading signals and DPDCH descrambling and despreading. The spread signal, and the M imaginary path DPDCH descramble and despread the signal.

[0042] Step...

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Abstract

An embodiment of the invention discloses a signal receiving method, a receiver, a signal combining method and a module thereof. The signal combing method comprises the following procedures: calculating the weight of each path; executing signal combination according to the weight of each path and the signal after DPDCH descrambling and dispreading; and outputting the combination result. The embodiment of the invention increases the performance of receiver in service with a plurality of paths and high speed through improving the combination method of the combination module.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a signal receiving method and receiver, a signal combining method and a module. Background technique [0002] In a CDMA system, multiple users can share the same frequency, which greatly improves the frequency utilization rate. RAKE receiver technology is the core technology of CDMA system. Since the multipath signals contain usable information, the signal-to-noise ratio of the received signal can be improved by combining the multipath signals. What the RAKE receiver does is: receive each signal in the multipath signal through multiple correlation detectors, and combine them together. [0003] In a CDMA spread spectrum system, the channel bandwidth is much larger than the flat fading bandwidth of the channel. Different from traditional modulation techniques, which require equalization algorithms to eliminate inter-symbol interference between adjacent symb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/707H04B1/7115H04B1/712
Inventor 赵宇翔王菁王小璐
Owner HUAWEI TECH CO LTD
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