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Communication station with multiple antennas

A communication station and antenna technology, which is applied to the communication station field of the code division multiple access technology, can solve the problems of increasing noise, difficulty in correctly detecting and receiving signals by a receiver, and increasing the amount of background noise.

Inactive Publication Date: 2004-10-20
INTERDIGITAL TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All signals not encoded with the receiver's pseudo-random code appear as background noise to the receiver
Therefore, as the number of users communicating within the operating range of a particular communication station increases, the amount of background noise also increases, making it difficult for receivers to properly detect and receive signals
A transmitter can increase the power of the transmitted signal, but for other receivers, this increases noise (interference)

Method used

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  • Communication station with multiple antennas
  • Communication station with multiple antennas
  • Communication station with multiple antennas

Examples

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Embodiment Construction

[0024] Preferred embodiments of the present invention are described below with reference to the accompanying drawings, wherein like reference numerals represent like elements throughout.

[0025] figure 1 A communication network 2 embodying the invention is shown in . Communications network 2 typically includes one or more base stations 4, each in wireless communication with a plurality of subscriber units 6, which may be fixed or mobile. Each subscriber unit 6 communicates with the closest base station 4 or the base station 4 providing the strongest communication signal. The base stations 4 also communicate with a base station controller 8 which coordinates communications between the base stations 4 . The communication network 2 may also be connected to a public switched telephone network (PSTN) 9, wherein a base station controller 8 also coordinates communications between the base stations 4 and the PSTN9. Each base station 4 preferably communicates with a base station co...

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Abstract

A CDMA subscriber unit includes an antenna system having multiple antennas and delay units for receiving a transmitted signal and outputting a combined signal having a known distortion imparted by the antenna system. The combined signal is in turn processed by a modem, which compensates for the known distortion in a manner which provides improved signal gain. The improved signal gain permits a reduction in transmit power and, accordingly, increased capacity of the base station. Where the antenna system is to be remotely located from related signal processing equipment, separate units for the RF receiver / transmitter and the other signal processing equipment are provided so that the RF receiver / transmitter may also be remotely located along with the antenna system.

Description

[0001] This application is a divisional application of the patent application entitled "Multi-antenna Communication Station" filed by the applicant on May 26, 1998 with the application number 98801565.X (PCT international application number PCT / US98 / 10602). technical field [0002] The present invention relates to wireless digital communication systems. More particularly, the present invention relates to communication stations using Code Division Multiple Access (CDMA) technology, where each communication station has multiple antennas, to increase the capacity of the CDMA system. Background technique [0003] Over the past decade, consumers have become accustomed to the convenience of wireless communication systems. This has led to a huge demand for wireless telephony, wireless data transmission and wireless access to the Internet. Due to government controls and spectrum allocations, the amount of RF spectrum available for any given system is usually very limited. Therefor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/06H04B7/005H04B7/08H04B7/26H04W52/52
CPCH04J13/00H04W52/52H04B7/0894H04B7/2628
Inventor 加里R·隆珀列昂尼德·卡泽克维奇杰弗里S·波伦戴维K·梅塞彻
Owner INTERDIGITAL TECH CORP
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