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Channel quality estimation method and receiving apparatus

一种信道质量估计、信道质量的技术，应用在数据接收领域，达到容易获取的效果

Inactive Publication Date: 2005-11-02
SONY ERICSSON MOBILE COMM AB
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, it may not be possible to announce accurate channel quality in related art systems

Method used

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  • Channel quality estimation method and receiving apparatus
  • Channel quality estimation method and receiving apparatus
  • Channel quality estimation method and receiving apparatus

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Embodiment Construction

[0047] Embodiments of the present invention will be described below with reference to FIGS. 2 to 8 .

[0048] In this embodiment, the present invention is applied to the HSDPA (High Speed ​​Downlink Packet Access) method for implementing high-speed downlink data transmission in the UMTS system (Universal Mobile Telecommunications System), wherein as described in the related art description, The UMTS system is a wireless telecommunication system to which the W-CDMA method is applied. In this system there is a synchronization channel as described above which is not orthogonal to the data channel or the like (see Figure 2).

[0049]The HSDPA method is a system suitable for high-speed downlink data transmission from a base station of a wireless telephone system to a mobile telephone unit. First, a structural example of a mobile phone unit (wireless communication terminal) will be described with reference to FIG. 3 .

[0050] In the mobile phone unit of this embodiment, an antenn...

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Abstract

Channel quality can be detected accurately in a wireless transmission system such as an HSDPA method. In the case of estimating a channel quality of a signal transmitted by a Code Division Multiple Access method and of estimating the channel quality in a system having a synchronization channel not orthogonal to a channel receiving data, a noise component of a desired channel is estimated; degree of a noise component caused by the synchronization channel is estimated with respect to the estimated noise; and a channel quality of a receiving channel is detected based on the estimated degree of the noise component.

Description

[0001] Cross References to Related Applications [0002] The present application contains subject matter related to Japanese Patent Application JP2004-130070 filed in the Japan Patent Office on Apr. 26, 2004, the entire content of which is hereby incorporated by reference. technical field [0003] The present invention relates to a channel quality estimation method suitable for wireless communication terminals that communicate using the CDMA (Code Division Multiple Access) method, and a receiving device that performs channel quality estimation processing, and also relates to a method suitable for, for example, HSDPA The method is a technique for receiving data by a wireless communication terminal. Background technique [0004] As one of the wireless telephone systems, the High Speed ​​Downlink Packet Access (hereinafter abbreviated as HSDPA) method is currently developed to realize the high speed downlink in the Universal Mobile Telecommunications System (UMTS system) using ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L21/336H01L21/8247H01L27/115H01L29/788H01L29/792H04B1/707H04B1/7097H04B17/00H04B17/336H04L1/20
CPCH04B1/7097H04L1/20F24D5/005F24D2200/14F24D2220/0207F24D2220/042
Inventor 小久保武
Owner SONY ERICSSON MOBILE COMM AB
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