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A method and system for sending multiple carrier frequency signal

A multi-carrier frequency and signal technology, applied in the field of mobile communication, can solve problems such as affecting system performance, reducing the peak-to-average ratio of multi-carrier signals, and achieve the effects of improving transmission performance, reducing signal peak-to-average ratio, and reducing the probability of superposition

Inactive Publication Date: 2010-05-05
CHINA ACAD OF TELECOMM TECH
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  • Abstract
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Problems solved by technology

[0013] The purpose of the present invention is to provide a method for transmitting multi-carrier frequency signals, so as to overcome the shortcomings in the prior art that multiple carriers use the same midamble code when transmitting multi-carrier signals, thereby generating stronger ACLR and affecting system performance. In a multi-carrier TD-SCDMA system, simply and effectively reduce the peak-to-average ratio of multi-carrier signals

Method used

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  • A method and system for sending multiple carrier frequency signal
  • A method and system for sending multiple carrier frequency signal
  • A method and system for sending multiple carrier frequency signal

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Embodiment Construction

[0050] The core of the present invention is that in the TD-SCDMA system, each carrier baseband time slot signal is multiplied by a certain phase deflection factor, and the phase deflection factor corresponding to each carrier has a unique corresponding relationship with the carrier frequency. Then, transmit processing is performed on the deflected baseband time slot signal, so as to reduce the probability of a large peak in the peak-to-peak superposition of the radio frequency signal.

[0051] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0052] refer to image 3 , image 3 The implementation process of the method of the present invention is shown, including the following steps:

[0053] Step 301: Generate baseband time slot signals of each carrier frequency.

[0054] Generate baseband time...

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Abstract

The invention relates to a method for sending multi-carrier signal. Wherein, it comprises that: generating the base band time slit of each carrier frequency; fixing the phase drift fact needed by eachcarrier wave; multiplying said base band time slit signal with relative phase drift factor; reflecting the drifted base band time slit signal. The invention also discloses a relative system, which comprises a base band time slit signal generator, carrier modulator, phase drifter, signal layer device, radio modulator. The invention can effectively reduce the signal peak / average ratio in multi-carrier TD-SCDMA.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a method and system for transmitting multi-carrier frequency signals. Background technique [0002] In the mobile communication system, the use of multi-carrier technology can enable base station equipment to support more users or provide greater coverage, improve system capacity, thereby greatly reducing the number of base stations and site sites, and reducing system operators. invest. [0003] TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system is one of the three mainstream technologies of the current 3GPP standard. TD-SCDMA adopts TDD (Time Division Duplex) mode, which can realize asymmetric allocation of uplink and downlink resources, and has a high frequency band utilization rate. It is an ideal cellular network packet data transmission system. In the 3GPP specification Release 5 version, the HSDPA maximum packet data transmission rate o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J13/00H04L27/26H04L5/26
Inventor 邓猛张艳孙建勋
Owner CHINA ACAD OF TELECOMM TECH
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