Method and device for linear pre-coding of communication system

A linear precoding and communication system technology, applied in transmission systems, digital transmission systems, radio transmission systems, etc., can solve the problems of waste of communication time and frequency resources, large system overhead, complex methods, etc., to reduce computational complexity, The effect of improving performance and increasing throughput

Inactive Publication Date: 2013-03-06
深圳市信方达科技发展股份有限公司
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Problems solved by technology

Therefore, although this method can break the limitation on the number of antennas, the method is complicate

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  • Method and device for linear pre-coding of communication system
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  • Method and device for linear pre-coding of communication system

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[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0023] It should be understood that the technical solution of the present invention can be applied to various communication systems, such as: Global System of Mobile communication (Global System of Mobile communication, referred to as "GSM") system, Code Division Multiple Access (Code Division Multiple Access, referred to as "CDMA") ”) system, Wideband Code Division Multiple Access (WCDMA for short) system, General Packet Radio Service (GPRS for short), Lon...

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Abstract

The invention discloses a method and a device for linear pre-coding of a communication system. The method comprises the following steps of: setting an initial value of a receiving beam forming matrix RBFM of the current sub-carries according to channel characteristics of sub-carries which are related to a current sub-carrier of ith user equipment; determining an equivalent combined channel compensation matrix of the ith user equipment in pth iteration of the current sub-carrier according to the RBFM of the ith user equipment in (p-1)th iteration, wherein the p is a natural number; obtaining a right singular vector set of a left zero defect space of the equivalent combined channel compensation matrix and setting the right singular vector set into a transmitting beam forming matrix TBFM of the ith user equipment in the pth iteration; and setting the TBFM of the ith user equipment into a pre-coding matrix Fi of the ith user equipment according to a convergence rule. According to the method and the device disclosed by the embodiment of the invention, a pre-coding matrix can be rapidly and simply obtained, the throughput rate of the system can be increased and the system performance can be improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for linear precoding of a communication system in the communication field. Background technique [0002] Since the system gain potential brought by Space Division Multiple Access (SDMA for short) in a Multiple-Input Multiple-Output (Multiple-Input Multiple-Output, "MIMO") system is great, therefore Multi-user (Multiple User, "MU" for short) MIMO has become a research hotspot in recent years. [0003] MIMO technology is first applied to single-user systems, and the joint processing on all transmit antennas and receive antennas brings MIMO gain. However, when MIMO technology is applied to MU scenarios, the inability to coordinate among users is a key problem. For the uplink and downlink communication in the cellular network, in the uplink communication, multiple users send information to the base station at the same frequency at the same time, and the base st...

Claims

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Application Information

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IPC IPC(8): H04L1/00
CPCH04B7/04H04B7/0452
Inventor 董明杰程瑶李胜弗洛里安・罗默张建树马丁・哈特宋斌
Owner 深圳市信方达科技发展股份有限公司
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