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Diversity device used on TDD mobile communication system

A mobile communication system and channel technology, which is applied in the field of diversity devices, can solve the problems of complex diversity devices, high cost, and no downlink transmission links, and achieve the effect of simple transmission and reception links and devices

Inactive Publication Date: 2008-10-15
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] In the prior art, the diversity device is complicated and costly, and at the same time, it has the disadvantage of not involving the downlink signaling link

Method used

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  • Diversity device used on TDD mobile communication system
  • Diversity device used on TDD mobile communication system
  • Diversity device used on TDD mobile communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] see figure 1 . A diversity device for a TDD mobile communication system of the present invention includes the following parts: an antenna unit 11 , a signal selector 12 , a transceiver unit 13 and a signal selection control interface 14 .

[0033] The antenna unit 11 includes two antenna channels. The two antennas are slightly separated in space, and while one antenna receives an invalid signal, the other antenna may receive a strong signal.

[0034] The signal selector 12 includes an antenna selection switch and a transmission and reception selection switch. The antenna selection switch is used to select one of several different antenna channels as a receiving and sending channel. A transceiver selector switch is used to switch between receiver and transmitter. The signal selector provides an antenna selection control terminal and a transceiver selection control terminal. The independent switching of the two switches (RF switches) can be controlled by the baseband...

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Abstract

The diversity unit consists of antenna unit containing two routes of antenna channels, signal selector including antenna selection switch and switch for selecting receiving and transmitting, transceiver unit including a receiver and a transmitter, and signal selection / control interface including RSSI module for testing intensity of received signal. One route of receiver and transmitter, and antenna in multipath reception and transmission are utilized in the device. Using switch in radio frequency for switching selections among multiple channels of antenna provides control interface, and strobing one route of antenna as receiving and transmitting channel. Same channel is adopted for receiving and transmitting signal in order to keep balance of chain. In TDD mode, receiving signal and transmitting signal are positioned at different time slots. Switch in radio frequency makes receiving signal and transmitting signal possible to use same antenna channel, and balance the chain.

Description

technical field [0001] The present invention relates to a diversity device in the wireless communication field, in particular to a diversity device used in a TDD (Time Division Duplex) mobile communication system. Background technique [0002] In the field of wireless communication, it is necessary to establish a wireless channel between the mobile station and the base station, and the quality of the wireless channel is crucial to the performance of the entire communication system. The propagation path of the wireless channel is very complicated, from simple line-of-sight propagation to reflection, diffraction and scattering when encountering various obstacles, such as buildings, leaves, people, vehicles, etc. In this way, from the transmitter to the receiver, the electromagnetic waves go through different paths, and finally superimposed on the receiver antenna, the strength of the signal is related to the phase and amplitude of each component, forming a multipath effect. D...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/00H04Q7/20H04B7/02H04B7/26
Inventor 李勇强李香玲吴双桂陈弘
Owner ZTE CORP
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