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Frequency hopping in an sc-fdma environment

A SC-FDMA and frequency hopping technology, which is applied in communication between multiple stations, digital transmission system, electrical components, etc., can solve the problems of non-provision and limited provision

Active Publication Date: 2009-07-22
QUALCOMM INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional techniques may provide limited or no feedback related to channel information

Method used

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  • Frequency hopping in an sc-fdma environment
  • Frequency hopping in an sc-fdma environment
  • Frequency hopping in an sc-fdma environment

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Embodiment Construction

[0037] The various aspects are now described with reference to the drawings, wherein like reference numerals are used to refer to like components throughout. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. It may be evident, however, that such aspects may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more aspects.

[0038] Additionally, various aspects of the disclosure are described below. It should be appreciated that the teachings herein can be embodied in a variety of broad forms and that any specific structure and / or function disclosed herein is illustrative only. Based on the teachings herein one skilled in the art should appreciate that an aspect disclosed herein may be implemented independently of any other aspects and that t...

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Abstract

Facilitate frequency hopping for a single carrier frequency division multiple access (SC-FDMA) transmission is described herein. By way of example, user data transmitted within a transmission allocation unit can be frequency shifted with respect to time based slots of the allocation unit. As a result, frequency hopping can be accomplished while preserving single carrier constraints and a low peak to average power ratio (PAPR). Furthermore, various frequency shifted mechanisms are disclosed to accomplish preservation of single carrier restraints. For example, a scheduler can select between cyclic frequency shifting, transposed frequency shifting, and multiplexing of frequency selective scheduled and frequency hopped data based on an audit of scheduled data for the transmission allocation unit. As a result, the reduction in interference achieved through frequency hopping can be combined with the low PAPR for various data allocation configurations.

Description

[0001] cross reference [0002] This application claims the benefit of US Provisional Patent Application No. 60 / 819,916, filed July 10, 2006, entitled "AMETHOD ANDAPPARATUS FOR FREQUENCY HOPPING FOR SC-FDMA." The entire content of the aforementioned application is hereby incorporated by reference. technical field [0003] The following description relates generally to wireless communications and, more specifically, to providing frequency hopping in single carrier frequency division multiple access transmissions. Background technique [0004] Wireless communication systems are widely used to provide various types of communication content such as voice, data, and so on. A typical wireless communication system may be a multiple-access system capable of supporting communication with multiple users by sharing available system resources (eg, bandwidth, transmit power). Examples of such multiple-access systems may include Code Division Multiple Access (CDMA) systems, Time Divisio...

Claims

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Application Information

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IPC IPC(8): H04B7/26
CPCH04B1/7143H04B7/2615H04L27/2602H04B1/713
Inventor D·P·马拉蒂B-H·金
Owner QUALCOMM INC
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