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

A pilot signal and channel estimation technology, which is applied in the field of channel estimation method, pilot signal transmission method, device and system, can solve problems such as traditional terminal interference and traditional terminal performance impact, reduce power consumption, ensure CSI estimation and Effect of demodulation performance and guaranteed performance

Active Publication Date: 2013-07-24
HONOR DEVICE CO LTD
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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

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  • Pilot signal emission method, channel estimation method, channel estimation device and channel estimation system
  • Pilot signal emission method, channel estimation method, channel estimation device and channel estimation system
  • Pilot signal emission method, channel estimation method, channel estimation device and channel estimation 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) In systems su...

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Abstract

The invention discloses a pilot signal emission method, a channel estimation method, a channel estimation device and a channel estimation system. The pilot signal emission method comprises the following steps: a pilot signal I CPICH1 is emitted on a first antenna, and a pilot signal II CPICH2 is emitted on a second antenna; a pilot signal CPICHk1 is emitted on a k1th antenna; and when the fact that a first type of terminals existing in a multi-input multi-output (MIMO) system are dispatched is determined, a pilot signal CPICHk2 is emitted on the k1th antenna. By means of the pilot signal emission method, interference on traditional terminals by the pilot signals can be well reduced, the effect that the first type of terminals in the MIMO system can work well is guaranteed, the properties of the traditional terminals are guaranteed at the same time, and power consumed for emitting pilot frequency can also be effectively lowered.

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-Input Multiple-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 (simple input simple output, single input transmission output) transmission, 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 kno...

Claims

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Application Information

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IPC IPC(8): H04B7/06H04L25/02
CPCH04L5/0062H04L5/005H04B7/0413H04B7/0684H04L5/0023H04L25/0226H04W52/325H04B7/0465H04B7/0608H04L5/0048H04L25/0224
Inventor 铁晓磊周欢吴更石花梦胡文权
Owner HONOR DEVICE CO LTD
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