Multi-carrier receiver for wireless communication

A receiver and signal technology, applied in the field of communication, can solve the problems of receiver design complexity and cost increase

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

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Problems solved by technology

However, to support the reception of multiple frequency channels, the

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  • Multi-carrier receiver for wireless communication
  • Multi-carrier receiver for wireless communication
  • Multi-carrier receiver for wireless communication

Examples

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Embodiment Construction

[0022] The multi-carrier receivers described herein can be used in various wireless communication systems, such as CDMA, TDMA, FDMA, OFDMA and SC-FDMA systems. The terms "system" and "network" are often used interchangeably. A CDMA system may implement a radio technology such as cdma2000, Universal Terrestrial Radio Access (UTRA), and others. cdma2000 covers IS-2000, IS-95 and IS-856 standards. UTRA includes Wideband CDMA (W-CDMA) and Low Code Rate (LCR). A TDMA system can implement a radio technology such as Global System for Mobile Communications (GSM). The OFDMA system can implement such as evolved UTRA (E-UTRA), IEEE802.11, IEEE802.16, IEEE802.20, and other wireless technologies. These various wireless technologies and standards are well known in the art. UTRA, E-UTRA and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). cdma2000 is described in documents from an organization named "3rd Generation Partnership Proj...

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Abstract

A multi-carrier receiver capable of receiving one or multiple frequency channels simultaneously is described. In one design, the multi-carrier receiver includes a single radio frequency (RF) receive chain, an analog-to-digital converter (ADC), and at least one processor. The RF receive chain processes a received RF signal and provides an analog baseband signal comprising multiple signals on multiple frequency channels. The ADC digitizes the analog baseband signal. The processor(s) digitally processes the samples from the ADC to obtain an input sample stream. This digital processing may include digital filtering, DC offset cancellation, I/Q mismatch compensation, coarse scaling, etc. The processor(s) digitally downconverts the input sample stream for each frequency channel to obtain a downconverted sample stream for that frequency channel. The processor(s) then digitally processes each downconverted sample stream to obtain a corresponding output sample stream. This digital processing may include digital filtering, downsampling, equalization filtering, upsampling, sample rate conversion, fine scaling, etc.

Description

[0001] related application [0002] This patent application claims priority to Provisional Application No. 60 / 830,923, filed July 14, 2006, entitled "DEMODULATION OF MULTIPLE DATA CHANNELS WITH A SINGLERF RECEIVE CHAIN," which is hereby assigned to the present assignee, and expressly incorporated herein by reference. technical field [0003] The present disclosure relates generally to communications and, more particularly, to receivers for wireless communication systems. Background technique [0004] Wireless communication systems are widely deployed to provide various communication services such as voice, video, packet data, messaging, broadcast, and so on. These systems may be multiple-access systems capable of supporting multiple users by sharing available system resources. Examples of such multiple access systems include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogo...

Claims

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Application Information

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IPC IPC(8): H04L5/06H04L5/02H04L25/03H04L25/06H04L27/38H03G3/20H03M3/02H04B1/69H04J1/04
CPCH03G3/3068H04B1/707H04L5/023H04L5/06H04L25/03H04L25/06H04L27/38H04L27/3863H04L27/3872H04B7/02H04B7/204
Inventor R·R·里克V·索罗凯恩
Owner QUALCOMM INC
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