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Joint PAPR reduction and rate adaptive ultrasonic OFDM physical layer for high data rate through-metal communications

A rate-adaptive, metallic technology, applied in ultrasonic/acoustic/infrasonic transmission systems, adjusting transmission rates, and modifying transmission based on link quality, can solve problems such as reducing effective transmission power and unrealized power amplifiers, etc., to achieve The effect of increasing system reliability, high throughput, and balanced probability

Inactive Publication Date: 2014-05-21
DREXEL UNIV
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Problems solved by technology

However, none of these approaches enable customization to the ultrasound frame or a means of addressing reduced effective transmit power due to inefficient use of power amplifiers

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  • Joint PAPR reduction and rate adaptive ultrasonic OFDM physical layer for high data rate through-metal communications
  • Joint PAPR reduction and rate adaptive ultrasonic OFDM physical layer for high data rate through-metal communications
  • Joint PAPR reduction and rate adaptive ultrasonic OFDM physical layer for high data rate through-metal communications

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[0030] The present invention can be more easily understood by referring to the following detailed description obtained in conjunction with the accompanying drawings and examples forming a part of the present disclosure. It should be understood that the present invention is not limited to the specific products, method conditions or parameters described and / or shown herein, and the terms used herein are only used for the purpose of describing specific embodiments by example, and are not intended to limit any requirements. Protected invention. Similarly, any description about possible mechanisms or behavior patterns or reasons for improvements is only meant to be illustrative, and the invention herein is not affected by the correctness and errors of any such possible mechanisms or behavior patterns or reasons for improvements. Sexual constraints. Throughout this article, it can be recognized that the description refers to both the method and the software used to implement such a ...

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Abstract

A link adaptive orthogonal frequency-division multiplexed (OFDM) ultrasonic physical layer is provided that is capable of high data rate communication through metallic structures. The use of an adaptive OFDM subcarrier-based modulation technique mitigates the effects of severe frequency selective fading of the through-metal communication link and improves spectral efficiency by exploiting the slow-varying nature of the channel. To address the potential ill effects of peak-to-average power ratio (PAPR) and to make more efficient use of the power amplifiers in the system, the invention modifies and implements a symbol rotation and inversion-based PAPR reduction algorithm in the adaptive OFDM framework. This joint adaptive physical layer is capable of increasing data rates by roughly 220% in comparison to conventional narrowband techniques at average transmit powers of roughly 7 mW while constrained to a desired BER.

Description

[0001] Statement of Federally Funded Research [0002] Used in research funding No. #CNS-0923003 and #CNS-0854946 granted by the National Science Foundation and research funding No. N00014-11-1-0329 and N00014-12-l-0262 invested by the Office of Naval Research and Government support under project #N05-T020 established the present invention. The US government has certain rights in this invention. [0003] Cross references to related applications [0004] This application claims priority to U.S. Provisional Patent Application No. 61 / 490,321 filed on May 26, 2011. The content of this application is included here by reference. Technical field [0005] The present invention relates to wireless communication technology. More specifically, the present invention relates to high data rate communication via metal walls by combining subcarrier-based rate adaptive bit loading and passing through the frequency domain in an adaptive orthogonal frequency division multiplexing (OFDM) ultrasound ph...

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Application Information

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IPC IPC(8): H04B5/00
CPCH04L1/0005H04L5/0046H04L27/2614H04B11/00H04L27/01H04L27/262Y02D30/70H04L27/362H04L5/0007
Inventor 理查德·普里梅拉诺凯文·瓦纽戈玛格达蕾娜·比林斯基卡皮尔·丹德卡尔摩西·卡姆吉列尔莫·索莎
Owner DREXEL UNIV
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