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Portable information communication terminal, program, and recording medium

A technology of information communication and arithmetic control, applied in the directions of space transmit diversity, electrical components, transmission systems, etc., can solve problems such as ineffectiveness

Inactive Publication Date: 2007-12-19
SONY ERICSSON MOBILE COMM AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the prior art references, the control of the average number of operations is not performed according to the number of fingers that can be assigned
Therefore, the method according to the prior art reference is not effective

Method used

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  • Portable information communication terminal, program, and recording medium
  • Portable information communication terminal, program, and recording medium
  • Portable information communication terminal, program, and recording medium

Examples

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Embodiment Construction

[0037] Next, referring to the drawings, embodiments of the present invention will be described. FIG. 1 is a functional block diagram showing the structure of a portable information communication terminal 1 according to an embodiment of the present invention. The portable information communication terminal 1 includes an RF receiving unit 10, a multipath timing detection unit 12, a finger unit 14, a level measuring unit (corresponding to a first receiving state measuring device) 16, a total receiving level measuring unit (corresponding to a second receiving state measuring device) 17 , an average operation control unit 18 and a path distribution control unit 20 . Each component shown in FIG. 1 executes the receiving process of the portable information communication terminal 1 . Since the elements of the transmission process and the user interface are not directly related to the embodiments of the present invention, they are omitted in FIG. 1 .

[0038] The RF receiving unit 10...

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Abstract

The number of times for averaging operation for averaging a correlation value of a received signal and a reference signal is properly controlled. When the correlation value is not averaged, since a lower limit value TH_A of a correlation level of a distribution of timings of which a path exists is larger than an upper limit value TH_B of a correlation level of a distribution of timings of which a path does not exist, the correlation value of a path is hidden by noise. Since the averaging operation is repeated until the relation of TH_A>TH_B is satisfied, the averaging operation is stopped when the relation is satisfied. The TH A and TH_B are decided in accordance with RSCP and ISCP of a pilot channel and RSSI of a received base band signal.

Description

technical field [0001] The invention relates to an information communication terminal in a communication system, in particular to a portable information communication terminal and a method for performing average calculation control on it. Background technique [0002] In a Direct Sequence Spread Spectrum (DS-SS) system, multiple paths through a wireless transmission link are detected. Signals received from multiple paths are rake-combined in order to eliminate the effects of fading due to multipath, thereby improving communication quality. Therefore, the function of accurately detecting multiple paths for RAKE combining is very important for a receiving device of direct sequence spread spectrum wireless communication. [0003] In order to detect multiple paths, a correlation calculation of the received signal and the reference signal is required. In addition, in order to improve the detection accuracy of multiple paths, correlation calculations are performed multiple times...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/707H04B1/40H04B1/7113H04B1/7117H04B7/08
CPCH04B1/7113H04B2201/70707H04B1/7117H04B1/40
Inventor 深田浩之
Owner SONY ERICSSON MOBILE COMM AB
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