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Method and apparatus for mixed analog/digital beamforming

一种数字波束成形、模拟波束的技术，应用在数字传输系统、基于链路质量的传输修改、调制载波系统等方向，能够解决大功耗、数字波束成形方案不可行、高成本等问题

Active Publication Date: 2014-04-23
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the 60GHz frequency band, wireless communication systems can have 8 or more antenna sets, but digital beamforming schemes are not feasible in practice due to the high cost and large power consumption required in AFE
[0005] Furthermore, the hybrid antenna selection (AS) / DBF schemes used to address this issue also do not provide gain through antenna aggregation or beamforming, resulting in large performance degradation

Method used

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  • Method and apparatus for mixed analog/digital beamforming
  • Method and apparatus for mixed analog/digital beamforming
  • Method and apparatus for mixed analog/digital beamforming

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Embodiment Construction

[0027] discussed below Figure 1 to Figure 11 The various embodiments used to describe the principles of the disclosure in this patent document are by way of illustration only and should not be construed in any way to limit the scope of the disclosure. Those skilled in the art will understand that the principles of the present disclosure may be implemented in any suitably arranged system or device. Exemplary embodiments of the present disclosure will be described herein below with reference to the accompanying drawings. In the following description, detailed descriptions of well-known functions or configurations will be omitted since they would unnecessarily obscure the subject matter of the present disclosure. And, the terms used herein are defined according to the functions of the present disclosure. Therefore, the terms may be changed according to user's or operator's intention or practice. Accordingly, the terms used herein should be understood based on the descriptions...

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Abstract

A method provides mixed analog / digital beamforming by a transmitter in a mobile communication system. The method includes converting a modulation symbol into a parallel symbol stream, performing digital beamforming on the parallel symbol stream, performing an IFFT operation on the digital-beamformed parallel symbol stream to generate a time-domain symbol, converting the IFFT-operated time-domain symbol into a serial time-domain symbol, inserting a CP into the serial time-domain symbol, performing a DAC operation on the CP-inserted symbol to generate an analog signal, and performing analog beamforming by multiplying the analog signal by the analog beamforming precoder optimized for the first subcarrier transmitted through at least one RF channel.

Description

technical field [0001] The present disclosure generally relates to wireless communication systems, and in particular, the present disclosure relates to methods and apparatus for hybrid analog / digital beamforming in wireless communication systems. Background technique [0002] In order to design a multi-Gbps wireless communication system, efforts are being made to use the frequency band of 60 GHz mainly by employing a large number of license-exempt frequency bands. Use of this can support applications requiring high bandwidth, such as uncompressed high-definition (HD) multimedia. [0003] Current multi-antenna wireless communication systems are based on digital beamforming (DBF) schemes in a low carrier frequency band (5GHz). In this architecture, each antenna has its own analog front-end (AFE) chain, and each AFE chain performs the conversion between the digital baseband domain and the analog radio frequency (RF) domain. And, the transmitter includes a digital-to-analog co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04L1/06H04B7/04
CPCH04B7/0413H04L27/2626H04L1/0025H04B7/0617H04B7/0682H04B7/0691H04B7/0695H04B7/0417H04L27/2628
Inventor 韩双锋B.克勒克斯
Owner SAMSUNG ELECTRONICS CO LTD