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Method for realizing frequency distribution and detection of mixed FDMA

A technology of frequency allocation and frequency division multiple access, which is applied in the direction of preventing/detecting errors through diversity reception, multiplexing communication, electrical components, etc., and can solve problems such as low channel accuracy and large frequency intervals

Inactive Publication Date: 2007-09-26
PANASONIC CORP
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AI Technical Summary

Problems solved by technology

If DFDMA is used, since the frequency interval between the estimated channel and the channel that needs to be interpolated is relatively large, and the independence of channels between different frequency points is high, the channel accuracy obtained by interpolation is low.

Method used

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  • Method for realizing frequency distribution and detection of mixed FDMA
  • Method for realizing frequency distribution and detection of mixed FDMA
  • Method for realizing frequency distribution and detection of mixed FDMA

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Embodiment Construction

[0044] In one solution of the present invention, the MIMO system has multiple transmitting antennas, and the frequency division methods used by each antenna are different, which can be called the inter-antenna hybrid frequency division method. The system can be fixed to allocate distributed frequency division multiple access to some antennas. In this way, it uses the characteristics of multiple antennas in the system, so that there are both distributed frequency allocation and local frequency allocation in the system, taking into account channel changes The characteristics enable the system to adapt to low time-varying systems and high time-varying systems at the same time, and provide frequency diversity gain and time diversity gain at the same time, enhancing the adaptability of the system.

[0045] In another solution of the present invention, in the MIMO system, according to the signal-to-interference-noise ratio of each antenna at different frequencies, different MCS (modu...

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Abstract

The invention discloses a frequency distribution and detection method of the mixed frequency multiaddress in upgoing multi-input and multi-output systems, the said method includes following steps: in the transmitting end, it adopts any one distribution type of distributing type, local type and mixing type to allocate the frequency for the signal sent by one of the multi launching aerials, and that can make the sending signal be underlaped in the frequency field; in the receiving end, the overlapped sending signal appeared in the whole frequency field is changed by time space inverse Fourier transform, and the receiving signal is converted form the frequency field to the time field, and the sending signal of every antenna is checked by the MIMO detection in the time field.

Description

technical field [0001] The invention relates to a frequency allocation and detection method for realizing hybrid frequency division multiple access in an uplink multiple-input multiple-output system, which is applicable to high-speed wireless communication systems and high-throughput wireless local area network systems under various cellular systems, and is especially suitable for Uplink wireless communication system. Background technique [0002] With the improvement of the third-generation mobile communication transmission rate, the continuous period of each symbol is reduced. In order to effectively combat frequency selective fading in a high-speed communication environment, the proposals of 3GPP (Third Generation Partnership Project) focus on using frequency division multiple access (FDMA). In the frequency division multiple access system, the frequency of each user is orthogonal, and the continuous symbol period of each user signal will not decrease with the increase o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/02H04L1/06H04J99/00
CPCH04B1/69H04B1/713H04B7/068H04B7/0697
Inventor 赵铮李继峰
Owner PANASONIC CORP
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