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Pilot signal transmission method, channel estimation method, device and system

A technology for pilot signal and channel estimation, applied in the fields of pilot signal transmission method, channel estimation method, device and system, can solve the problems of traditional terminal performance impact, traditional terminal interference, etc., to ensure CSI estimation and demodulation performance, The effect of reducing power consumption and ensuring performance

Active Publication Date: 2016-03-30
HONOR DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the transmission power of the pilot signal transmitted on the third and fourth antennas is too high, it will cause greater interference to traditional terminals, thereby affecting the performance of traditional terminals

Method used

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  • Pilot signal transmission method, channel estimation method, device and system
  • Pilot signal transmission method, channel estimation method, device and system
  • Pilot signal transmission method, channel estimation method, device and system

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Embodiment Construction

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0054] See figure 1 , is a schematic flow chart of the first embodiment of the pilot signal transmission method of the present invention, the method of this embodiment can be applied to 4Branch MIMO systems, including 4x4 (4 input 4 output) MIMO system and 4x2 (4 input 2 output) MIMO System, 4x1 MIMO (4 input 1 output) system, 8Branch MIMO system, including 8x8 (8 input 8 output) MIMO system, 8x4 (8 input 4 output) MIMO system, 8x2 (8 input 2 output) MIMO system I...

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Abstract

Embodiments of the present invention disclose a pilot signal transmission method, a channel estimation method, an apparatus, and a system, where the method includes: transmitting a pilot signal 1 CPICH1 over a first antenna, and transmitting a pilot signal 2 CPICH2 over a second antenna; transmitting a pilot signal CPICHk1 over a k1 th antenna; and when it is determined that a terminal of a first category in the MIMO system is scheduled, transmitting a pilot signal CPICH k2 over the k1 th antenna. Interference caused by a pilot signal to a traditional terminal is better reduced, performance of the traditional terminal is ensured while the terminal of the first category properly works in the MIMO system, and power consumption for transmitting a pilot frequency is effectively reduced.

Description

technical field [0001] The invention relates to the field of pilot signal transmission in a multiple-input multiple-output system, in particular to a pilot signal transmission method, channel estimation method, device and system. Background technique [0002] MIMO (Multiple-InputMultiple-Out-put: Multiple Input Multiple Output) system supports multiple input multiple output transmission from multiple (M) transmitting antennas to multiple (N) receiving antennas. Of course, the MIMO system is also compatible with SISO ( simpleinputsimpleoutput, single input transfer out) transfer, etc. [0003] In a MIMO system, in order to recover the data transmitted via the wireless channel, it is usually necessary to estimate the wireless channel between the base station and the terminal. Generally, a pilot signal is transmitted from a base station, and the terminal receives the pilot signal to perform channel estimation. The pilot signal is composed of a pilot sequence known in advance ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02H04B7/06
CPCH04B7/0413H04B7/0684H04L5/0023H04L5/005H04L5/0062H04L25/0226H04W52/325H04B7/0465H04B7/0608H04L5/0048H04L25/0224
Inventor 铁晓磊周欢吴更石花梦胡文权
Owner HONOR DEVICE CO LTD