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An Optimal Power Allocation Method among Pilot Data Based on Reducing the Upper Bound of Average Bit Error Rate

A technology of average bit error rate and pilot data, applied in the field of communication anti-jamming

Active Publication Date: 2020-08-11
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention, aiming at the problem of how to best assign the transmission power to the pilot frequency and data when the number of subcarriers carrying pilot frequency and data and the average transmission power of the PSM-OFDM-MIMO system are determined, propose a method based on reducing An Optimal Pilot and Data Power Allocation Method with an Upper Bound on Average Bit Error Rate

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  • An Optimal Power Allocation Method among Pilot Data Based on Reducing the Upper Bound of Average Bit Error Rate
  • An Optimal Power Allocation Method among Pilot Data Based on Reducing the Upper Bound of Average Bit Error Rate
  • An Optimal Power Allocation Method among Pilot Data Based on Reducing the Upper Bound of Average Bit Error Rate

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[0048] The present invention is described in detail below in conjunction with accompanying drawing

[0049] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention. It should be specially reminded that in the following description, when detailed descriptions of known functions and designs may dilute the main content of the present invention, these descriptions are omitted here.

[0050] In order to describe the present invention better, the terms used in the technical solution of the present invention and the MIMO system receiver structure are firstly introduced.

[0051] MIMO system: such as figure 1 , b is the bit data to be transmitted, which can be regarded as an L×T matrix, where L=log2(4) is the number of bits carried by a QPSK symbol. figure 2 , gave an N t root transmit antenna and N r An example of optimal power allocation usin...

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Abstract

The invention discloses an optimal power allocation method among pilot data based on reducing the upper bound of the average bit error rate, and belongs to the technical field of communication anti-jamming. First deduce the upper bound of the real-time bit error rate when the receiver uses the MMSE algorithm to estimate the channel under the condition of carrying the pilot frequency, the number of data subcarriers and the average transmit power, and then the Q function in the upper bound is approximated by natural exponential, Then deduce the upper bound of the average bit error rate. Finally, the upper bound of the average bit error rate is derived, and the optimal pilot and data power allocation factors that make the derivative zero are obtained. By minimizing the upper bound of the average bit error rate of the system, a good BER performance requirement is effectively achieved.

Description

technical field [0001] The invention belongs to the technical field of communication anti-jamming, and relates to multiple input multiple output (Multiple Input Multiple Output, MIMO) technology, Orthogonal Frequency Division Multiplexing (OFDM) technology, precoding assisted spatial modulation (Precoding Aided Spatial Modulation) , PSM) technology, power distribution technology. Background technique [0002] MIMO technology is a high-speed transmission technology in a wireless environment. It configures multi-antenna units at the transmitter and receiver, and combines advanced space-time coding and modulation schemes. By making full use of the space degree of freedom, it can bring additional diversity. , multiplexing and beamforming gains. [0003] The PSM technology is a new technology in the MIMO system, which uses the index of the receiving antenna to carry information bits, and can further improve the performance of the MIMO system. Moreover, the PSM technology can be...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0413H04B7/0426H04B7/0456H04L27/26H04L5/00
CPCH04B7/0413H04B7/0426H04B7/0456H04L5/0048H04L27/2601H04L27/2614H04L27/2627Y02D30/70
Inventor 李尤雷霞肖悦黄宁秀原艳南
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA