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Synchronous demodulator for base station radio transmit-receive station in tentative standard 2000 system

A technology of synchronous demodulation and base station wireless, which is applied in the direction of synchronization devices, transmission systems, wireless communications, etc., and can solve problems such as hindering the number of users

Inactive Publication Date: 2006-04-19
PANTECH CO LTD
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Problems solved by technology

[0003] If the asynchronous demodulation technique typical of the IS-95 system is applied to the currently developing Interim Standard 2000 (IS-2000), compared with the synchronous demodulation, the reception level of the asynchronous demodulation will decrease in function by about 3dB, which will hinder the increase in the number of users

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  • Synchronous demodulator for base station radio transmit-receive station in tentative standard 2000 system
  • Synchronous demodulator for base station radio transmit-receive station in tentative standard 2000 system
  • Synchronous demodulator for base station radio transmit-receive station in tentative standard 2000 system

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Embodiment Construction

[0009] The embodiments are described below with reference to the drawings, so that other objects and aspects of the present invention will become apparent, which are described as follows.

[0010] Figure 1 is a block diagram for explaining the synchronous demodulation equipment of the base station wireless transceiver in the Interim Standard 2000 (IS-2000) system. Based on a preferred embodiment of the present invention, the synchronous demodulation equipment of the base station wireless transceiver in the IS-2000 system includes a first synchronous demodulation unit 100, a channel estimation unit 200, a received signal delay unit 300, and an interference signal regeneration unit 400 and a second synchronous demodulation unit 500.

[0011] The first synchronous demodulation unit 100 receives a received signal r(t) and demodulates each user signal of the'k' mobile stations included in the received signal r(t) so as to output the demodulated signal to the interference Signal regener...

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Abstract

The present invention provides a synchronous demodulation apparatus of a base transceiver station in an Interim Standard-2000 (IS-2000) system, including a first synchronous demodulation unit, a received signal delay unit, an interference signal regeneration unit and a second synchronous demodulation unit. In comparison with an asynchronous demodulation apparatus used in an Interim Standard-95 (IS-95), it is possible for the inventive apparatus to improve a reception function approximately 3dB and ultimately increase the number of subscribers.

Description

Technical field [0001] The present invention relates to a synchronous demodulation device of a base station wireless transceiver in a tentative standard 2000 (IS-2000) system, and in particular to a synchronous demodulation device in an IS-2000 system, which uses code division multiple access (CDMA) ) Parallel interference cancellation and serial interference cancellation technology of the system to improve the reception performance of the synchronous demodulation device. Background technique [0002] Among various interference cancellation technologies in a typical code division multiple access (CDMA) system, parallel interference cancellation technology and serial interference cancellation technology have been promoted as representative technologies. However, when the mobile station transmits radio frequency (RF) signals to the base station wireless transceiver station, the high power consumption causes the IS-95 system to not allow the transmission of pilot channels, so these ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J13/02H04Q7/30H04L7/00H04B1/707H04B1/7107H04L25/02H04W56/00H04W76/02
CPCH04L25/0204H04B1/71075H04L25/0224H04B2201/70701
Inventor 金镇日
Owner PANTECH CO LTD
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