Wireless transceiver

A technology of wireless transceiver and transceiving conversion, applied in the field of communication, can solve the problems of weakening the advantages of DPD power efficiency improvement, increasing the implementation cost, circuit volume, and high complexity of circuit implementation

Inactive Publication Date: 2009-09-16
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The feedback receiving path in the DPD design of the existing TDD system has a large power consumption, which weakens the advantage of power efficiency improvement brought by the introduction of DPD, and the circuit implementation complexity is high, which increases the implementation cost and circuit volume

Method used

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Embodiment Construction

[0091] The embodiment of the present invention provides a wireless transceiver, the main working principle of which is: according to the different timeliness of signal transmission and reception in the TDD system, when the wireless transceiver works in the transmission mode, that is, when the transmitter in the wireless transceiver works , use the currently inactive receiving path as the feedback receiving path by switching the switch.

[0092] The schematic diagram of the structure and principle of the wireless transceiver provided by the embodiment of the present invention is as follows: figure 2 As shown, it includes: an analog circuit module 11 , a digital circuit module 12 , a switch control module 13 , a router 14 , a transceiver module 15 and an antenna 16 .

[0093] The analog circuit module 11 is used to convert the predistortion transmission signal generated by the digital circuit module 12 into a radio frequency signal capable of being transmitted by the antenna 16...

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Abstract

The invention discloses a wireless transceiver applied to a time division duplex (TDD) system. The wireless transceiver comprises a digital circuit module, an analog circuit module, a switching control module, a route selector, a transceiving conversion module and an antenna, wherein the analog circuit module comprises a transmitting path and a multiplexing receiving path; and the switching control module controls the operation of the transceiving conversion module and the route selector. When the antenna and the transmitting path are connected by the transceiving conversion module, a digitalpredistortion (DPD) processing unit of the digital circuit module is connected by the route selector and then the multiplexing receiving path is used as a feedback receiving path; when the antenna and the multiplexing receiving path are connected by the transceiving conversion module, a digital signal processing unit of the digital circuit module is connected by the route selector and the multiplexing receiving path is used as a normal receiving path; and the volume and realization cost of the circuits are reduced by the multiplexing of a common receiving path and the feedback receiving path.

Description

technical field [0001] The present invention relates to the communication field, in particular to a wireless transceiver with a digital pre-distortion (Digital Pre-Distortion, DPD) function used in a Time Division Duplex (Time Division Duplex, TDD) system. Background technique [0002] With the rapid development of wireless communication and the development of broadband communication services, the communication frequency band becomes more and more crowded. In order to accommodate more users in the limited spectrum range, linear modulation technology with higher spectral efficiency must be adopted. The envelope of a linearly modulated signal is non-constant and has a high peak-to-average ratio. Therefore, in order to reduce adjacent channel power leakage and signal quality deterioration caused by signal distortion, a power amplifier (Power Amplifier, PA) in a communication system using a linear modulation technique must have a high linearity. [0003] In order to obtain the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/38H04B1/44H04B1/54H03F1/32
Inventor 程广辉许灵军
Owner CHINA MOBILE COMM GRP CO LTD
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