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Communication system, transmitted power level controller and correlation method thereof

A technology of transmitting power level and communication system, applied in the field of automatic level controller, can solve the problem of the deviation of the transmission power from the target transmission power, and achieve the effect of alleviating the deviation of the transmission power

Inactive Publication Date: 2011-08-24
MEDIATEK INC
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  • Description
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Problems solved by technology

[0004] In order to at least solve the problem that the actual transmission power deviates from the target transmission power due to non-ideal factors, the present invention provides a communication system, a transmission power level controller and related methods

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  • Communication system, transmitted power level controller and correlation method thereof
  • Communication system, transmitted power level controller and correlation method thereof
  • Communication system, transmitted power level controller and correlation method thereof

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Embodiment Construction

[0013] Certain terms are used throughout the specification and preceding claims to refer to particular elements. Those of ordinary skill in the art should understand that hardware manufacturers may use different terms to refer to the same component. The description and the preceding claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. "Includes" mentioned throughout the specification and the preceding claims is an open-ended term, so it should be interpreted as "including but not limited to". Otherwise, the term "coupled" includes any direct and indirect means of electrical connection. Therefore, if it is described that a first device is coupled to a second device, it means that the first device may be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connection means.

[0014] figu...

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Abstract

The invention relates to a communication system, a transmitted power level controller and a correlation method thereof. The transmitted power level controller is used for the communication system. The communication system comprises a radio frequency unit and a power amplifier. The radio frequency unit is used for generating communication signals and the power amplifier is used for amplifying the communication signals to generate emission signals. The transmitted power level controller comprises a temperature sensor used for sensing at least one temperature of the radio frequency unit and the power amplifier to generate temperature detected signals; a power detector used for detecting the transmitted power of the emission signals to generate power detected signals; and an automatic level controller used for adjusting the transmitted power of the emission signals according to the power detected signals when maximum transmitted power is in a given scope, or adjusting the transmitted power according to the temperature detected signals. The invention can correct or eliminate power offset, and avoid or relieve deviation of the transmitted power.

Description

technical field [0001] The present invention relates to a method and device for controlling the transmitting power of a communication system, in particular to an automatic level controller (automatic level controller) of a WiMAX system and related methods. Background technique [0002] In a communication system, the Signal to Noise Ratio (SNR) is an important indicator of the transmission quality of the communication system. A common way to improve the signal-to-noise ratio is to increase the power of the transmitted signal. However, this method usually cannot work effectively in wireless communication, especially in a small area, such as in a network unit (cell), where there are many users using adjacent frequency bands (frequency band) at the same time. . This is because the first signal with high power may become a serious interference source for the second signal adjacent to it in the frequency band. Although the signal-to-noise ratio of the first signal is improved, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/02H04B7/005
CPCH03G3/3042H04W52/52H04W52/36
Inventor 范盛博
Owner MEDIATEK INC
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