Multiple path multiple carrier digital pre-distortion sender of wideband CDMA base station system

A code division multiple access base station, digital predistortion technology, applied in code division multiplexing systems, multi-carrier systems, multi-frequency code systems, etc. High cost, improved transmit performance and efficiency, effect of saving RF link expenses
CN1988522AActive Publication Date: 2007-06-27ZTE CORP
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Patent Information

Authority / Receiving Office
CN Ā· China
Patent Type
Applications(China)
Current Assignee / Owner
ZTE CORP
Publication Date
2007-06-27

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Abstract

A multi-channel and multi-carrier Digital Predistortion writing machine of wideband CDMA base station system includes the feedback signal processing channels and at least one multiplexing signal processing channels of multi-carrier base band, of which, each includes the digital base-band peak-clipping frequency processor, digital predistortion processing module, high-intermediate frequency output module and filter, radio frequency access and high power amplifier. The feedback signal processing channel includes the RF feedback channel and A / D converter. The invention uses the base band peak-clipping technology, digital predistortion technology and high-intermediate digital IF technology, to reduce the high cost by the use of the linear power amplifier, and can effectively enhance the launch performance and efficiency of the base station system. The invention does not use the feedback channel switching technology to achieve saving the cost of RF link.
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Description

technical field

[0001] The invention belongs to the field of mobile communication, relates to a base station system transmitter, in particular to a broadband code division multiple access base station system multi-channel multi-carrier digital pre-distortion transmitter. Background technique

[0002] The development of mobile communication technology is changing with each passing day. The 3G mobile communication system puts forward higher requirements for signal transmission technology. As an important part of the 3G mobile communication system, the performance of the transmitter has become an important factor affecting the performance, capacity and cost of the entire system. factor.

[0003] For wideband code division multiple access base station systems, the peak-to-average ratio signal is likely to cause nonlinear distortion during the amplification process, resulting in degradation of communication signal quality. At present, the most widely used is the linearized trans...

Claims

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