Channel estimation and detection method and base station

A channel estimation and joint channel estimation technology, which is applied in the field of wireless communication, can solve problems such as high computational complexity, high scheduling requirements, and poor interference suppression capabilities, so as to improve demodulation performance, reduce requirements, and increase system throughput. Effect

Active Publication Date: 2013-10-30
ZTE CORP
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Problems solved by technology

[0008] Embodiments of the present invention provide a channel estimation and detection method and a base station to solve the problems of high scheduling requirements, high computational complexity, and poor interference suppression capabilities in the prior art

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  • Channel estimation and detection method and base station
  • Channel estimation and detection method and base station
  • Channel estimation and detection method and base station

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Embodiment Construction

[0054] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0055] like figure 1 As shown, it is a schematic diagram of an embodiment of the uplink CoMP system of the present invention. In this embodiment, for the convenience of description, three cells (Cells) are set to perform uplink CoMP, and each cell has one UE, and Cell1-Cell3 correspond to The UEs in this cell are UE1-UE3 respectively. The uplink frequency domain resources of UE1-UE3 completely overlap or partially overlap.

[0056] like figure 2 As shown, it is a flow chart of the uplink CoMP joint channel estimation and joint detection method of the present invention. In...

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Abstract

The invention provides a channel estimation and detection method and a base station. The method for channel estimation and detection includes that: time domain signals received by antennas are converted into frequency domain signals by a base station side; multi-UE joint estimation is carried out by the base station side for pilot frequency symbols in the frequency domain signals of multi-UE of multi-cell of Coordinated Multi-Point (CoMP) to obtain a channel estimation result of all UE pilot frequency symbols; a channel estimation result of UE data symbols is obtained by base station side according to the channel estimation result of the UE pilot frequency symbols; jiont equalization is carried out by the base station for the multi-UE of multi-cell to obtain all detection results of the UEs. By the channel estimation and detection method and the base station, requirement for dispatch is lowered, calculation complexity is reduced, interference inhibition capability is enhanced, and demodulation performance for marginal users of a cell is improved, thus throughput of a system is improved.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a channel estimation and detection method and a base station. Background technique [0002] With the development and wide application of wireless communication technology, people's requirements for future communication are constantly increasing. How to better improve the coverage of high-speed data rates and improve the transmission quality and throughput at the edge of the cell has become a subject of competing research. The coordinated multi-point (Coordinated Multi-Point, CoMP) can effectively solve these problems by utilizing the joint transmission and reception technology of multiple points, thereby improving the capacity and reliability of the wireless link. Therefore, the CoMP technology is introduced into the Long Term Evolution-Advanced (LTE-A) system as a key technology. [0003] Under uplink CoMP, multiple cells may receive signals from multiple user equipment (U...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02H04B7/04
Inventor 王雯芳李玉洁孙岩秦洪峰刘巧艳王雪
Owner ZTE CORP
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