Multi-cell channel estimation method based on elimination of serial interference

A serial interference elimination and interference elimination technology, applied in multiplexing communication, code division multiplexing system, electrical components, etc., can solve communication failure, channel estimation interference of synchronization system, fixed interference of receiving system, etc. question

Inactive Publication Date: 2007-05-30
XUANPU INDUSTRY CO LTD
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Problems solved by technology

[0003] In the same-frequency environment, since there is fixed same-frequency signal interference in different code channels of the training sequence, the interference of this fixed mode will be related to the time delay of the cell and the synchronization codeword used. If the signal channel of the cell is estimated Unable to accurately identify this co-channel interference will cause serious interference to the channel estimation of the system leading to the synchro

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  • Multi-cell channel estimation method based on elimination of serial interference
  • Multi-cell channel estimation method based on elimination of serial interference
  • Multi-cell channel estimation method based on elimination of serial interference

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[0053] As shown in FIG. 2 , it is a structural connection diagram of a channel estimation system based on serial interference cancellation in the TDSCDMA communication system provided by the present invention. It adopts a serial interference elimination device, and the serial interference elimination device includes several serial basic interference elimination modules; the interference elimination is performed in a serial manner to obtain channel estimation.

[0054] Multi-cell channel estimation based on serial interference elimination: use the training sequence to estimate the channel situation of the receiving channel, and obtain the modulus p(k) of the channel estimation. Figure 2 shows a two-stage serial interference elimination module, which is formed by connecting basic interference elimination units in a serial manner as shown in the figure. The number of stages of the interference elimination module will be selected according to the performance requirements of the ac...

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Abstract

This invention relates to one multiple area signal estimation method based on series interference elimination, which adopts series interference method to remove interference, which comprises steps of interference reconstruction, signal correlating, effect path testing, signal reconstruction and interference removing. This invention method can effectively overcome receive environment interference to improve signal channel decline of accuracy to improve system property.

Description

technical field [0001] The invention relates to a multi-cell channel estimation method based on serial interference elimination in a Time Division Synchronous Code Division Multiple Access Communication (TD-SCDMA) system. Specifically, it relates to a multi-cell channel estimation method based on serial interference cancellation in the same-frequency receiving environment. Background technique [0002] In the receiving device of Time Division Synchronous Code Division Multiple Access (TD-SCDMA), in order to obtain good receiving effect, it is necessary to obtain accurate channel estimation of the training sequence. Since the receiving device is in the process of continuous movement, the wireless channel conditions are constantly changing, and it is necessary for the channel estimation to accurately reflect the signal changes. Both the receiving system and the timing tracking system need a high-performance channel estimation method to accurately detect channel changes to mee...

Claims

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Application Information

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IPC IPC(8): H04Q7/38H04B1/707H04J13/02
Inventor 王炳立谢一宁
Owner XUANPU INDUSTRY CO LTD
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