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Digital baseband system and process for compensating for analog radio transmitter impairments

A wireless transmission, digital baseband technology, applied in transmission system, transmission monitoring, improving amplifier to reduce nonlinear distortion, etc., can solve problems such as low integration, distortion, transmission communication signal limitation, etc.

Inactive Publication Date: 2008-12-17
INTERDIGITAL TECH CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] For system designers, the transmission of communication signals in existing wireless system architectures often has rather severe constraints
In addition, such wireless system architectures typically provide low reliability communication links and high operating costs, and the integration of such wireless system architectures with other system components is also undesirably low.
[0003] In the radio frequency (RF) segment of traditional low-cost wireless transmitters with analog components, the processing of radio frequency (RF) signals is often accompanied by a considerable degree of distortion

Method used

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  • Digital baseband system and process for compensating for analog radio transmitter impairments
  • Digital baseband system and process for compensating for analog radio transmitter impairments
  • Digital baseband system and process for compensating for analog radio transmitter impairments

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Embodiment Construction

[0030] The present invention relates to a digital baseband (DBB) transmitter that utilizes low-efficiency radio components and compensates for the low radio performance of the digital baseband (DBB), thereby diverting radio frequency (RF) high-efficiency solutions to digital baseband (DBB). Therefore, the present invention will facilitate low cost, low power consumption, and low hardware complexity. Moreover, by optimizing the interaction between RF and DBB, DBB performance compensation can also be limited by RF characteristics integrated with DBB.

[0031] Preferably, the digital baseband (DBB) transmitter is integrated into a wireless transmit / receive unit (WTRU). As used herein, a wireless transmit / receive unit (WTRU) includes, but is not limited to, user equipment (UE), mobile station, fixed or mobile subscriber unit, pager, or any other type of device capable of operating in a wireless environment. In addition, the features of the DBB transmitter can also be integrated ...

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Abstract

To compensate for the performance degradation caused by the poor tolerance of low-cost analog radio components in analog radios, a wireless communication transmitter utilizes a control program to implement various digital signal processing (DSP) techniques that compensate for the lack of analog content, thereby complying with current standard specifications. Via monitoring of temperature, offset current, and the like, enhanced phase and amplitude compensation can be implemented, along with various other radio frequency (RF) parameters.

Description

technical field [0001] The present invention relates to transmitter design for wireless communication systems. In particular, the present invention relates to digital signal processing (DSP) techniques for compensating for impairments caused by analog wireless transmitters, such as channel distortion, carrier leakage, amplitude unevenness, phase unevenness, or the like. Background technique [0002] For system designers, existing wireless system architectures typically impose severe constraints on the transmission of communication signals. In addition, such wireless system architectures usually provide low-reliability communication links and high operating costs, and the integration of such wireless system architectures with other system components is also undesirably low. [0003] In the radio frequency (RF) segment of conventional low-cost wireless transmitters with analog components, the processing of radio frequency (RF) signals is often accompanied by a considerable de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/10H04B17/00H04B1/06H03F1/32H04B1/04
Inventor 艾佩斯兰·戴米尔利昂德·卡萨凯费许肯尼斯·P·基尔内
Owner INTERDIGITAL TECH CORP
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