Method and device for linear precoding in communication system
A linear precoding, communication system technology, applied in transmission systems, digital transmission systems, radio transmission systems, etc., can solve the problems of complex methods, large system overhead, waste of communication time and frequency resources, etc., to increase throughput, improve performance, the effect of reducing computational complexity
Inactive Publication Date: 2015-08-05
深圳市信方达科技发展股份有限公司
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Therefore, although this method can break the limitation on the number of antennas, the method is complicated, the system overhead is large, and it is easy to cause waste of communication time and frequency resources
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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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Disclosed are a linear precoding method and device for a communication system. The method includes: setting an initial value D i (0) of a receiving beam forming matrix (RBFM) of the current sub-carrier according to the channel feature of a sub-carrier related to the current sub-carrier of the ith user equipment; determining an equivalent joint channel complement matrix H ei (p) of the ith user equipment of the pth iteration according to the RBFM D i (p-1) of the ith user equipment of the (p - 1)th iteration, where p is a natural number; acquiring a right singular vector set of the left null to fall space forming the equivalent joint channel complement matrix H ei (p) , and setting the right singular vector set formula (I) to be a transmission beam forming matrix TBFM F i (p) of the ith user equipment of the pth iteration; and setting TBFM F i (p) of the ith user equipment to be a precoding matrix F i of the ith user equipment according to convergence rules. The method and device of the embodiments of the present invention can rapidly and simply acquire a precoding matrix, and can increase the throughput of the system, improving system performance.
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...
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IPC IPC(8): H04L1/00
CPCH04B7/0452
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