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Adaptive Tracking Step Size for Time Tracking Loop and Frequency Tracking Loop

A technology of time tracking loop and frequency tracking loop, which is applied in automatic power control, receiver monitoring, transmission monitoring, etc., and can solve problems such as slow urban canyons, suboptimal fixed settings, and jitter

Active Publication Date: 2016-08-03
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, problems with fixed tracking are that time tracking and / or frequency tracking are too slow for urban canyons, or too fast and jittery for high geometry, line of site / line of sight static Internet connections
In advanced geometry or good signal conditions, a worst-case fixed setting for loop gain is not optimal for such conditions

Method used

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  • Adaptive Tracking Step Size for Time Tracking Loop and Frequency Tracking Loop
  • Adaptive Tracking Step Size for Time Tracking Loop and Frequency Tracking Loop
  • Adaptive Tracking Step Size for Time Tracking Loop and Frequency Tracking Loop

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Embodiment Construction

[0027] Systems and methods are provided to facilitate wireless communications. In one aspect, a method of wireless communication is provided. The method includes analyzing one or more channel condition parameters from the wireless communication and automatically adjusting frequency tracking loop gain or time tracking loop gain with reference to the channel condition parameters. The channel condition parameter may be based on, for example, an energy-to-noise and total interference ratio parameter (Ecp / Nt) of pilot chips.

[0028]It should be noted that in one or more of the exemplary embodiments described herein, the functions described may be implemented in hardware, software, firmware or any combination thereof. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitat...

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Abstract

A wireless communication method is provided. The method includes analyzing one or more channel conditions from the wireless communication and automatically adjusting a frequency tracking loop gain or a time tracking loop gain with reference to the channel conditions.

Description

[0001] claim priority [0002] This application claims the benefit of US Provisional Patent Application No. 61 / 158,836, filed March 10, 2009, entitled ADAPTIVE TRACKING STEPS FORTIME AND FREQUENCY TRACKING LOOPS, the contents of which are hereby incorporated by reference. technical field [0003] In general terms, the following description relates to wireless communication systems and, in particular, to methods for adaptive control of time tracking and frequency tracking in wireless communication systems. Background technique [0004] Wireless communication systems are widely deployed to provide various types of communication content such as voice, data, and so on. These systems may be multiple-access systems capable of supporting communication with multiple users by sharing available system resources (eg, bandwidth and transmit power). Examples of such multiple access systems include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03L7/107H04L27/233
CPCH04L2027/0024H04B17/21H04B17/309H04B17/336H04B17/11H03L7/107H04B7/0413H04B7/0845
Inventor W-J·宋S·S·帕拉科德蒂F·路Y·金A·K·戈特蒂D·张
Owner QUALCOMM INC