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Method and device for shaping double-flow wave beams

A dual-stream beam-forming technology, applied in space transmit diversity, baseband system components, diversity/multi-antenna systems, etc., can solve the problems of high implementation complexity and large amount of calculation, and achieve the effect of reducing the amount of calculation

Inactive Publication Date: 2013-12-18
POTEVIO INFORMATION TECH CO LTD
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Problems solved by technology

[0014] Although the EBB method can adapt to the multipath environment and the environment of multiple polarization configurations, it is limited in practical applications due to its high complexity and large amount of calculation.

Method used

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  • Method and device for shaping double-flow wave beams
  • Method and device for shaping double-flow wave beams

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Embodiment Construction

[0034] In order to make the technical principles, features and technical effects of the technical solution of the present invention clearer, the solution of the present invention will be described in detail below in conjunction with specific embodiments.

[0035] The physical uplink shared channel (PUSCH) sending module and the PUSCH receiving module used in the embodiment of the present invention are respectively as follows figure 1 with figure 2 shown. Among them, the PUSCH sending module is located on the terminal side, including: a service mapping unit 101, a scrambling unit 102, a modulation unit 103, a packet discrete Fourier transform (DFT) unit 104, a reference signal generating unit 105, an SRS sending unit 106, and a resource mapping unit 107 and an SC-FDMA baseband processing unit 108. The PUSCH sending module is consistent with the prior art.

[0036] The PUSCH receiving module is located at the base station side, including: a fast Fourier transform FFT unit 20...

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Abstract

The invention provides a method for shaping double-flow wave beams. The method comprises the following steps that A, an uplink channel estimation matrix H 2*8 is acquired according to a received monitored reference signal SRS; B, the product of the uplink channel estimation matrix H 2*8 and a conjugate transpose matrix H 2*8 is calculated to obtain a middle result T 2*2; C, singular value decomposition is conducted on the T 2*2 to obtain a D matrix; D, the matrix product W 8*2 of the conjugate transpose matrix H 2*8 of the uplink channel estimation matrix and the matrix product W8*2 of the D matrix is calculated, and the formula is expressed as W8*2 = H2*8*D; E, phase taking operation is conducted on the matrix product W8*2 to obtain a wave beam shaping weight vector; F, according to the wave beam shaping weight vector obtained by calculation, the sending signals of each user are shaped, and shaped data are sent. Compared with an existing maximum power feature decomposition shaping method (EBB), the method for shaping the double-flow wave beams can obviously reduce computation.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a dual-stream beamforming method and device. Background technique [0002] The goal of beamforming is to form the optimal combination or allocation of baseband (IF) signals according to system performance indicators. Specifically, its main task is to compensate for signal fading and distortion introduced by factors such as space loss and multipath effects during wireless propagation, and at the same time reduce interference between co-channel users. Beamforming works on the principle that signals from multiple transmitting antennas are combined at the receiving antenna. [0003] According to different application scenarios, beamforming methods can generally be divided into uplink applications and downlink applications. In either case, a time-varying vector (MIMO) channel can always be used to describe the signal relationship between the user end and the bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04L25/02
Inventor 吕伯轩
Owner POTEVIO INFORMATION TECH CO LTD
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