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Multi-antenna wireless communication system, transmit/receive processing unit and its combined treatment method

A technology of a wireless communication system and a processing unit, applied in multi-frequency code systems, preventing/detecting errors through diversity reception, transmission systems, etc., can solve problems such as difficulties in implementation, affecting system bit error rates, etc., and achieve the goal of reducing capacity loss Effect

Inactive Publication Date: 2006-09-27
PANASONIC CORP
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  • Abstract
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Problems solved by technology

However, power distribution requires a wide dynamic range of RF power amplifier devices in order to continuously distribute power, so it is difficult to achieve
On the other hand, in order to improve the bit error rate performance of the system, the system adopts adaptive modulation, and when the same modulation method is used for each antenna branch, the disadvantage of this method is that the gain of each subchannel is different , the sub-channel with low channel gain will affect the bit error rate of the system

Method used

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  • Multi-antenna wireless communication system, transmit/receive processing unit and its combined treatment method
  • Multi-antenna wireless communication system, transmit/receive processing unit and its combined treatment method
  • Multi-antenna wireless communication system, transmit/receive processing unit and its combined treatment method

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that the described embodiments are for the purpose of illustration only, and do not limit the scope of the present invention.

[0026] Consider a single-user MIMO OFDM communication link, the sending and receiving ends of which are as follows figure 1 and 2 As shown, the sending end and the receiving end are respectively installed with N T Width transmitting antenna 101~101 ' and N R Width receiving antennas 106-106'. At the sending end, the information symbol stream is input to the multiplexer 103, and the multiplexer 103 sends the symbol stream into each transmitting antenna branch end in a space division multiplexing manner; at each branch end, the inverse fast Fourier transform ( IFFT) modules 102-102' perform OFDM modulation on the symbol stream; the modulated symbols are sent to the channel from each antenna 101-101'. At the receiving end,...

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Abstract

The invention provides a combined treatment method in multi-antenna wireless communicating system, which comprises a receiving end used to do geometric average dissociation to the channel matrix to obtain the linear transformation matrix Q, the upper triangular matrix R and the pre-filtering matrix P with their dimensionality K*K, it feedbacks the pre-filtering matrix P and the linear transformation matrix Q to the sending end and uses QH to do linear transformation to the signals; it uses the pre-filtering matrix P to do linear pre-coding to the signals and uses QH to do the linear transformation to the signals on the sending end; it testes the serial disturbance delete signals and recoveries the corresponding antenna end sending signals on the receiving end.

Description

technical field [0001] The invention relates to a multi-antenna wireless communication system (including single / multi-carrier multi-antenna system), a sending / receiving processing unit and a joint processing method thereof. Background technique [0002] With the gradual integration of wireless network, multimedia technology and the Internet, people have higher and higher requirements for the type and quality of wireless communication services. In order to meet the requirements of wireless multimedia and high-speed data transmission, it is necessary to develop a new generation of wireless communication system. Among them, the MIMO OFDM technology combining Multiple Antenna Input and Output (MIMO) and Orthogonal Frequency Division Multiplexing (OFDM) has attracted extensive attention. [0003] The MIMO OFDM system combining MIMO and OFDM has the advantages of both. It not only decomposes the frequency-selective MIMO fading channel into a group of parallel flat fading channels...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L1/06H04L27/26
Inventor 黎海涛李继峰
Owner PANASONIC CORP
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