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Decision directed antenna diversity in radio frequency receivers

An antenna and signal receiving technology, applied in the direction of space transmit diversity, diversity/multi-antenna system, wireless communication, etc., can solve problems such as fading

Inactive Publication Date: 2013-04-24
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These known sensing techniques require estimation of the power spectrum over a portion of the channel bandwidth and thus suffer from fading

Method used

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  • Decision directed antenna diversity in radio frequency receivers
  • Decision directed antenna diversity in radio frequency receivers
  • Decision directed antenna diversity in radio frequency receivers

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Embodiment Construction

[0021] The specific implementation manners described below in conjunction with the accompanying drawings are only intended to describe various configurations, and are not intended to indicate that the concepts described in this application can be realized only in these configurations. The detailed description includes specific details in order to provide a thorough understanding of various concepts. It will be apparent, however, to one of ordinary skill in the art that these concepts can be practiced without the use of these specific details. In some instances, well-known structures and components are shown in block diagram form in order to avoid obscuring the concepts.

[0022] see figure 1 , conceptually illustrates a block diagram of a white space network 10 configured according to one embodiment of the present disclosure. White space network 10 may be a TV white space network that includes certain television channel frequencies used by certain wireless microphone systems...

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Abstract

A white space sensing method includes receiving a signal on each of multiple antennas (402, 404) in an alternating fashion. The method also includes calculating feature metrics for incumbent signals on a given frequency channel for all antennas (e.g., pilot strength, luminance carrier strength (for NTSC) ) The strongest of the antennas can be selected, based on the calculated feature metrics, for white space sensing.

Description

[0001] Cross References to Related Applications [0002] This patent application claims priority to U.S. Provisional Patent Application No. 61 / 377,198, filed August 26, 2010, entitled "Decision Directed Antenna Diversity in Radio Frequency Receivers," assigned to the assignee of this application. It is hereby expressly incorporated by reference in its entirety. technical field [0003] The present invention relates generally to wireless communication systems and, more particularly, to antenna diversity in radio frequency (RF) receivers. Background technique [0004] The Federal Communications Commission (FCC) is responsible for regulating all non-federal government use of the radio spectrum (including radio and TV broadcasting), all interstate communications (wire, satellite, and cable), and all international communications originating or terminating in the United States An independent agency of the United States government. In 2010, the FCC finalized regulations authorizi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/08H04B17/00H04W16/14
CPCH04W16/14H04B17/0077H04B7/0808H04B17/382H04B7/08H04B17/00
Inventor A·K·萨迪克R·巴拉默西
Owner QUALCOMM INC