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Method, device and base station for determining initial phase

A technology of initial phase and phase, applied in the field of communication, can solve the problems of small and no reduction of PAPR.

Inactive Publication Date: 2011-12-28
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the Newman scheme of the prior art, in the case of unequal intervals between carrier signal frequencies and unequal power of each carrier signal, the degree of PAPR reduction is small or basically not reduced

Method used

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  • Method, device and base station for determining initial phase
  • Method, device and base station for determining initial phase
  • Method, device and base station for determining initial phase

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] figure 1 A schematic flow chart of the first embodiment of the method for determining the initial phase of the present invention, such as figure 1 As shown, the method includes:

[0037] Step 101, calculate the points L of the frequency domain-time domain transformation module according to the frequency point sets corresponding to the N baseband signals, so that the N frequency points of the N baseband signals correspond to the N frequency points in L; wherein, N , L is a positive integer;

[0038] Wherein, the set of frequency points corresponding to the N baseband signals may include N frequency points corresponding to the N baseband signals, or may include possible frequency points of the N baseband signals, assuming that the possible frequency points of the N baseband signals include M frequency points point, M is a positive integer, and M>N, that is to say, N frequency points of N baseband signals are within the range of M frequency points.

[0039] Wherein, the...

Embodiment 2

[0043] figure 2 A schematic flow chart of the second embodiment of the method for determining the initial phase of the present invention, such as figure 2 As shown, the method includes:

[0044] Step 201: Calculate the points L of the frequency domain-time domain transformation module according to the set of frequency points corresponding to the N baseband signals, so that the N frequency points corresponding to the N baseband signals correspond to the N frequency points in L;

[0045] As described in the relevant part of Embodiment 1, the frequency point set may include N frequency points corresponding to N baseband signals, or may include M possible frequency points of N baseband signals, M>N, that is, N of N baseband signals frequency points are within the range of M frequency points. In the embodiment of the present invention, L may be calculated directly according to N, or L may be calculated according to M. Calculating L according to N can make the calculation proce...

Embodiment 3

[0090] image 3 A schematic flow chart of the third embodiment of the method for determining the initial phase of the present invention, as shown in image 3 As shown, the method includes:

[0091] Step 301: Calculate the points L of the frequency domain-time domain transformation module according to the frequency point sets corresponding to the N baseband signals, so that the N frequency points correspond to the N frequency points in L;

[0092] In this embodiment of the present invention, the method for determining L is the same as that in Embodiment 2, and will not be repeated here.

[0093] Step 302: Perform power and phase processing on the matrix composed of N column vectors corresponding to N frequency points in the L*L frequency domain-time domain transformation module according to the prestored U group of random phase vectors, and obtain U processed Matrix; each group of random phase vectors includes N phases;

[0094] Let U group of pre-stored random phase vectors...

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Abstract

The embodiment of the invention provides a method, device and base station for determining an initial phase. The method comprises the following steps: calculating a point L of a frequency domain-time domain transformation module according to a frequency point set corresponding to N baseband signals so as to correspond N frequency points of the N baseband signals to N frequency points in the L; and synthesizing vectors corresponding to the N baseband signals according to the frequency domain-time domain transformation module with the point L, and selecting a phase corresponding to a synthesized signal vector with the lowest peak amplitude to be served as the initial phase of at most N baseband signals in the N baseband signals. The device comprises a calculation module and a phase determination module. According to the initial phase determined by the embodiment of the invention, the PAPR (peak-to-average power ratio) of a plurality of superposed carrier signals is greatly reduced.

Description

technical field [0001] The embodiments of the present invention relate to the field of communication technologies, and in particular to a method, device and base station for determining an initial phase. Background technique [0002] In order to save the power consumption of the base station in the Global System for Mobile communications (GSM), improve the integration of the base station and reduce the cost of the base station, a multi-carrier power amplifier (Multi-Carrier Power Amplifier, Hereinafter referred to as MCPA) technology, MCPA technology combines the signals of multiple carriers, then amplifies the combined signal with a power amplifier, and finally transmits the amplified signal through an antenna, because MCPA technology uses a power amplifier and a Therefore, it can effectively solve the power amplifier power drop problem caused by the combination in the traditional GSM network, thereby reducing energy consumption. [0003] However, since multiple carriers u...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04L25/02H04W52/24
Inventor 姜勇王艺马凡妮朱尔霓赵治林
Owner HUAWEI TECH CO LTD
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