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Switching diversity in broadcast OFDM systems based on multiple receive antennas

An antenna switching and antenna technology, applied in the field of communication systems

Inactive Publication Date: 2008-11-26
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as the speed (or Doppler spread) of the mobile handset changes, especially at small Doppler spreads, the performance of the single receive antenna FLO receiver architecture can degrade

Method used

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  • Switching diversity in broadcast OFDM systems based on multiple receive antennas
  • Switching diversity in broadcast OFDM systems based on multiple receive antennas
  • Switching diversity in broadcast OFDM systems based on multiple receive antennas

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Embodiment Construction

[0020] Systems and methods are provided for enhancing signal quality at a receiver in a wireless network. In one embodiment, an antenna is selected from a subset of antennas based on a signal quality parameter such as received signal power or signal-to-noise ratio (SNR). In another embodiment, multiple antennas are applied to separate signal processing paths for individual antennas, where the outputs from the paths are then combined to enhance the overall signal quality at the receiver. Signal quality and thus receiver performance can be improved in wireless networks by using multiple receive antennas and selecting from a subset of antennas or providing independent processing paths for the antennas.

[0021] As used in this application, the terms "component," "network," "system," and similar terms are intended to refer to a computer-related entity that is hardware, a combination of hardware and software, software, or a device for executing software . For example, a component...

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Abstract

Systems and methods are provided for enhancing signal quality at receivers in a wireless network. In one embodiment, an antenna is selected from a subset of antennas based on a signal quality parameter such as received signal power or signal-to-noise ratio (SNR). In another embodiment, multiple antennas are applied to independent signal processing paths for the respective antennas where output from the paths is then combined to enhance overall signal quality at the receiver.

Description

[0001] Claiming priority under 35 U.S.C. §119 [0002] This patent application claims priority to Provisional Application No. 60 / 721,373, filed September 27, 2005, entitled "Switching Diversity Based on Multiple Receive Antennas in a Broadcast Orthogonal Frequency Division Multiplexing System," and Said application is assigned to the assignee of the present invention and is expressly incorporated herein by reference. technical field [0003] The present technology relates generally to communication systems and methods, and more particularly to systems and methods for enhancing receiver performance in wireless systems by utilizing multiple antennas at the receiver. Background technique [0004] One technology that has dominated wireless systems is Code Division Multiple Access (CDMA) digital wireless technology. In addition to CDMA, the air interface specification defines FLO (Forward Link Only) technology that has been developed by a group of industry leading wireless oper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/08
CPCH04L1/0003H04B7/0874H04B7/0805H04B7/0811H04B7/0857H04B7/0404H04W72/085H04L27/2647H04B7/0814H04L1/0066H04L25/022H04L1/0057H04B7/0808H04B17/20H04L1/02H04W72/542
Inventor 李林波阿肖克·曼特拉瓦蒂凌福云
Owner QUALCOMM INC
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