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Peak-to-average power ratio (PAR) cut based on active set tone reservation

A peak-to-average power ratio and peak-to-peak technology, applied in the field of radio communication, can solve problems such as the impact of peak-to-average power ratio and performance degradation

Active Publication Date: 2014-11-05
STMICROELECTRONICS BEIJING R& D
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these systems also suffer from peak-to-average power ratio (PAR)
Without proper handling to deal with this problem, the high PAR of the transmitted signal may cause the high power amplifier (HPA) to operate in its non-linear region (that is, the peak-to-peak amplitude of the transmitted signal may be high enough to saturate the amplifier ), which will cause significant performance degradation

Method used

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  • Peak-to-average power ratio (PAR) cut based on active set tone reservation
  • Peak-to-average power ratio (PAR) cut based on active set tone reservation
  • Peak-to-average power ratio (PAR) cut based on active set tone reservation

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Embodiment Construction

[0014] The following discussion is presented to enable any person skilled in the art to make and use the subject matter disclosed herein. The general principles described herein may be applied to implementations and applications other than those described in detail above without departing from the spirit and scope of the subject matter disclosed herein. The present disclosure is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed or suggested herein.

[0015] In the following description, certain details are set forth in conjunction with the described embodiments in order to provide a thorough understanding of the subject matter disclosed herein. However, it will be understood by those skilled in the art that the disclosed subject matter may be practiced without these specific details. Furthermore, those skilled in the art will understand that the disclosed embodiments and various mo...

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Abstract

In an embodiment, a transmitter includes first and second processing blocks, which may each include hardware, software, or a combination of hardware and software. The first processing block is operable to generate a first peak-reducing vector. And the a second first processing block is operable to receive a first data vector, the data vector comprising a plurality of samples, the first data vector having a first peak with a first index and a first magnitude, a second peak with a second index and a second magnitude that is less than the first magnitude, and a first peak-to-average power ratio, and to generate a second data vector having a second peak-to-average power ratio that is lower than the first peak-to-average power ratio by using the first peak-reducing vector.

Description

technical field [0001] The present invention relates to radio communications, and more particularly, the present invention relates to an apparatus and method for curtailing peak-to-average power ratio based on active set tone reservations. Background technique [0002] Multicarrier transmission has been widely used in both wired and wireless communication systems such as Asymmetric Digital Subscriber Line (ADSL) systems, Digital Video Broadcasting (DVB) and Wireless Local Area Network / Metropolitan Area Network (WLAN / WMAN). Using discrete tone modulation (DMT) or orthogonal frequency division multiplexing (OFDM), these systems can achieve greater immunity to multipath fading and impulse noise at lower cost. However, these systems also suffer from peak-to-average power ratio (PAR). Without proper handling to deal with this problem, the high PAR of the transmitted signal may cause the high power amplifier (HPA) to operate in its non-linear region (that is, the peak-to-peak amp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
CPCH04L27/2618H04L27/2614H04L27/0006
Inventor 江森
Owner STMICROELECTRONICS BEIJING R& D