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Radio mobile station and radio communication system having same

A mobile station and wireless technology, applied in wireless communication, radio transmission system, communication between multiple stations, etc., can solve problems such as deterioration of receiving characteristics

Inactive Publication Date: 2003-07-23
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, since the FSM signal used in the CDMA wireless base station and the FSM signal used in the channel estimation in the CDMA wireless mobile station are not equal to each other, the reception characteristics may deteriorate in some cases
As a result, antenna detection must be performed

Method used

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  • Radio mobile station and radio communication system having same
  • Radio mobile station and radio communication system having same
  • Radio mobile station and radio communication system having same

Examples

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no. 1 example

[0009] Hereinafter, an embodiment mode of the present invention will be described with reference to the corresponding drawings. 1. The first embodiment [structural description]

[0010] figure 1 It is a schematic block diagram of the structure of a wireless communication system according to the first embodiment of the present invention. figure 1 A CDMA wireless base station 101 and a CDMA wireless mobile station 125 which will be described below are shown in FIG.

[0011] The CDMA wireless base station 101 includes: a diversity base station spread modulation unit 103 for spreading and modulating a downstream signal; a base station transmitting unit 104 for transmitting the spread and modulated downstream signal in the diversity base station spreading modulation unit 103 to a CDMA wireless mobile station 125 Base station first transmitting antenna unit 105 and base station second transmitting antenna unit 119, used for base station diversity; base station receiving antenna unit ...

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Abstract

The invention provides for a wireless mobile station comprising: a plurality of finger units for performing spread demodulation of a downstream signal transmitted from a base station through a transmission channel; and a rake unit for combining the spread-demodulated downstream signals which are outputted from each of the finger units, wherein both of the finger units and the rake unit share and perform arithmetic operation for compensating channel estimation of the spread-demodulated downstream signal.

Description

Technical field [0001] The present invention relates to a wireless mobile station and a wireless communication system having the wireless mobile station. More particularly, the present invention relates to a wireless mobile station using transmit diversity in a wireless communication system and a wireless communication system having the mobile station. Background technique [0002] In transmission diversity, two or more transmission channels are generally set up for the transmission of downstream signals, and channel estimation has been used in CDMA wireless systems so that the downstream signals transmitted from the base station can be used in a wireless mobile station such as a mobile phone. Received with good sensitivity. [0003] However, in the traditional technology, for the purpose of antenna detection, for example, the calculation of all 16 types of vectors composing two elements (ie, the phase and amplitude of the downstream signal) is performed in multiple branches of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/707H04B1/712H04B7/06H04B7/08H04B7/10H04B7/26H04W16/28H04W76/02H04W88/02H04W88/08
CPCH04B2201/7071H04B1/712H04B7/0634Y02B60/50H04B2201/70701
Inventor 松本真理子
Owner NEC CORP