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MIMO ACO-OFDM iteration receiving method in wireless optical communication system

A wireless optical communication and receiving method technology, applied in the field of MIMO ACO-OFDM iterative receiving, can solve the problems of overall system performance loss and transmitted signal distortion

Active Publication Date: 2015-08-12
SOUTHEAST UNIV
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  • Abstract
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Problems solved by technology

However, the clipping operation will inevitably cause the distortion of the transmitted signal, which will lead to the loss of the overall performance of the system

Method used

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  • MIMO ACO-OFDM iteration receiving method in wireless optical communication system
  • MIMO ACO-OFDM iteration receiving method in wireless optical communication system
  • MIMO ACO-OFDM iteration receiving method in wireless optical communication system

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Embodiment Construction

[0032] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.

[0033] The MIMO ACO-OFDM iterative receiving method in the wireless optical communication system disclosed in the embodiment of the present invention is based on the traditional MIMO ACO-OFDM receiving algorithm, and utilizes the linear approximation model of the clipping operation at the sending end and the statistical characteristics of clipping noise to control the receiving The signal is detected by MMSE and the clipping noise is removed iteratively. The method of th...

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Abstract

The invention discloses a multiple-input-multiple-output asymmetric clipping optical orthogonal frequency division multiplexing modulation (MIMO ACO-OFDM) iteration receiving method in a wireless optical communication system, wherein the method is characterized by detecting a minimum mean square error (MMSE) of a receiving signal by using a linear approximation model of clipping operation at a receiving end and statistical property of clipping noise on the basis of a traditional MIMO ACO-OFDM receiving algorithm, and eliminating the clipping noise in an iterative manner. The improved receiving method provided by the invention can effectively reduce performance loss of the system caused by the clipping noise and greatly reduce the bit error rate in comparison with a traditional MIMO ACO-OFDM receiver. Simultaneously, the method of the invention reduces the complexity of each iterative computation and the number of needed iterations, and therefore the method of the invention is easy for engineering realization.

Description

technical field [0001] The invention belongs to the field of wireless optical communication, in particular to a MIMO ACO-OFDM iterative receiving method. Background technique [0002] Wireless optical communication is a new type of communication that does not need to use wired channels as the transmission medium. It combines the advantages of optical fiber communication and microwave communication. It not only has the advantages of high-speed transmission and large communication capacity, but also does not need to lay optical fibers. A lot of manpower and material resources have been invested in the field of wireless optical communication, and phased results have been achieved. [0003] Multiple Input Multiple Output (MIMO) and Orthogonal Frequency Division Multiplexing (OFDM) are two core transmission technologies in modern radio frequency communication systems. MIMO technology configures multiple antennas on the transmitter and receiver, and uses the uncorrelation between...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02H04L25/03H04L27/26
Inventor 沈弘邓榆钦赵春明
Owner SOUTHEAST UNIV
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