Equipment and method for high channel receiving using for code division multiple access mobile terminal

A channel receiving and code division multiple access technology, applied in the field of high-order channel receiving equipment, can solve the problems of increasing the oscillator frequency accuracy of mobile wireless communication terminals, large circuit scale, and increasing manufacturing cost and price of mobile wireless communication terminals.

Inactive Publication Date: 2003-05-21
NEC ELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in the conventional perch channel receiving apparatus, the correlator 4 with the time window must have a large number of correlators to absorb and compensate for the large encryption timing shift, so the circuit scale of the correlator 4 with the time window must become considerably large
On the other hand, if we limit the circuit scale of the correlator 4 having a time window, the frequency accuracy of the oscillator of the mobile radio communication terminal needs to be increased, and therefore, the manufacturing cost and price of the mobile radio communication terminal must be increased

Method used

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  • Equipment and method for high channel receiving using for code division multiple access mobile terminal
  • Equipment and method for high channel receiving using for code division multiple access mobile terminal
  • Equipment and method for high channel receiving using for code division multiple access mobile terminal

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Embodiment Construction

[0041] Referring to the accompanying drawings, a specific description will be given below of preferred embodiments according to the present invention.

[0042] image 3 A block diagram showing a perch channel receiving apparatus of a mobile radio communication terminal according to an embodiment of the present invention, which performs perch channel reception with respect to a base station near the mobile radio communication terminal. exist image 3 in, with figure 1 The same reference numerals in the figure 1 the same or corresponding parts.

[0043] image 3 The perch channel receiving equipment comprises a delay curve generator 1, a base station encryption timing detector 2, a correlator 4A with a time window, and a perch channel demodulator 5, which is the same as figure 1 Similar to conventional perch channel receivers. image 3 The perch channel receiving device further includes a timing corrector 3 .

[0044] Delay profile generator 1 detects frame boundary marke...

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Abstract

A perch channel reception device of a mobile radio communication terminal for successively receiving perch channels of base stations around the terminal includes a delay profile generator, a base station scrambling timing detector, a timing corrector, a correlator with time window, and a perch channel demodulator.

Description

technical field [0001] The present invention relates to a perch channel receiving device and a perch channel receiving method of a mobile wireless communication terminal performing mobile wireless communication according to CDMA (Code Division Multiple Access). Background technique [0002] Mobile wireless communication terminals such as cellular phones are widely used today. Generally, when the power supply of a mobile wireless communication terminal is turned on, or during a predetermined period of time, the mobile wireless communication terminal must search for base stations near the mobile wireless communication terminal and obtain base station information (about the base station) transmitted by each base station. information, such as the current time of the base station, the identity of the base station, the transmit power of the base station, etc.). [0003] Base station information transmitted by a base station and received by mobile wireless communication terminals ...

Claims

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Application Information

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IPC IPC(8): H04B1/707H04B1/7083H04B7/26H04L7/00H04W56/00H04W76/02
CPCH04B1/7093H04B1/70735H04B1/70754H04B1/708
Inventor 须田敬伟
Owner NEC ELECTRONICS CORP
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