Method and device for obtaining signals with low peak-to-average power ratio based on error vector magnitude

A technology of error vector magnitude and peak-to-average power ratio, applied in power management, wireless communication, modulated carrier system, etc., can solve problems such as unsatisfactory requirements, discontinuous distribution of carrier transmit power, high receiving signal-to-noise ratio, etc.

Inactive Publication Date: 2012-07-04
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the case of unbalanced power allocation between carriers, due to the discontinuous allocation of the carrier's transmit power, the carrier with high transmit power has a high received signal-to-noise ratio (

Method used

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  • Method and device for obtaining signals with low peak-to-average power ratio based on error vector magnitude
  • Method and device for obtaining signals with low peak-to-average power ratio based on error vector magnitude

Examples

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] figure 1 A schematic diagram of a device for obtaining a signal with a low peak-to-average power ratio based on error vector magnitude adjustment according to one aspect of the present invention is shown. Wherein, the radio remote device 1 includes a receiving device 11 , an obtaining device 12 , a generating device 13 and a canceling device 14 .

[0024] Wherein, the receiving device 11 is used for receiving one or more carrier signals. Specifically, the receiving device 11 receives one or more carrier signals, including but not limited to any carrier signal in WCDMA system, CDMA2000 system, TD-SCDMA system, LTE system, such as based on QPSK, 64QAM or 16QAM, etc. Peak-to-average power ratio (PAPR) signals for modulation schemes, etc. For example, in the radio remote device 1, the receiving device 11 thereon receives a signal with a peak-to-average ...

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Abstract

The invention aims at providing a method and a device for obtaining signals with low peak-to-average power ratio based on error vector magnitude. The radio remote unit receives one channel or multi-channel carrier signals. An adjustment factor of the one-channel or multi-channel carrier signals is obtained according to expected error vector magnitude of the one-channel or multi-channel carrier signals. Peak compensation signals of the channel or multi-channel carrier signals are generated according to the adjustment factor. Peak compensation processing is conducted according to the peak compensation signals so as to obtain the signals with low peak-to-average power ratio. Compared with the prior art, the adjustment factor is adjusted based on the error vector magnitude, the signals with low peak-to-average power ratio are obtained, requirements of expected error vector magnitude (EVM) and peak-to-average power ratio (PAPR) are met, and furthermore, index requirements of adjacent channel leakage power ratio (ACLR) are met.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, and in particular to a technology for obtaining low peak-to-average power ratio signals based on error vector magnitude adjustment in remote radio equipment. Background technique [0002] Radio Remote Head (RRH) is a technology that converts baseband signals into optical signals for transmission and amplifies them at the remote end. The base station can be divided into two parts: wireless baseband control (RadioServer) and remote radio. Using RRH technology, various networks such as star, tree, chain and ring structures can be constructed flexibly and effectively according to different environments. For example, the technology can be used to expand the capacity of high-traffic areas such as shopping malls, airports, and stations, as well as improve coverage in hard-to-reach areas such as corporate headquarters, office buildings, or underground parking lots. [0003] In the r...

Claims

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Application Information

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IPC IPC(8): H04L27/00H04L27/26H04W52/00
CPCY02D30/70
Inventor 王江宏张鹏杰史聃吕星哉陈明曹峥蒋智宁黄诗晴
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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