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Optimal power allocation method of pilot data based on reduction of upper bound of average error rate

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

Active Publication Date: 2017-05-10
UNIV OF ELECTRONIC 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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  • Optimal power allocation method of pilot data based on reduction of upper bound of average error rate
  • Optimal power allocation method of pilot data based on reduction of upper bound of average error rate
  • Optimal power allocation method of pilot data based on reduction of upper bound of average error rate

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[0046] The present invention is described in detail below in conjunction with accompanying drawing

[0047] 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.

[0048] 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.

[0049] 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 of pilot data based on the reduction of an upper bound of an average error rate, and belongs to the technical field of communication interface prevention. The method comprises the following steps: on the condition that carrier pilot, the number of data subcarriers and the average transmitting power are derived to be determined, a receiving terminal uses the MMSE algorithm to estimate the upper bound of a real-time error rate of a channel, and then a Q function in the upper bound performs nature exponential approximation to derive the upper bound of the average error rate. Finally, the upper bound of the average error rate is solved to obtain optimal pilot with a derivative zero and a data power allocation factor. Good BER performance demands are effectively realized by minimizing the upper bound of the average error rate of the system.

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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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 ELECTRONIC SCI & TECH OF CHINA