Invention Grant
- Patent Title: Noise floor independent delay-locked loop discriminator
- Patent Title (中): 噪声独立的延迟锁定环路鉴频器
-
Application No.: US11923500Application Date: 2007-10-24
-
Publication No.: US07995683B2Publication Date: 2011-08-09
- Inventor: Xiang Yuan , Gang Xie
- Applicant: Xiang Yuan , Gang Xie
- Applicant Address: US CA San Jose
- Assignee: SiRF Technology Inc.
- Current Assignee: SiRF Technology Inc.
- Current Assignee Address: US CA San Jose
- Agency: RatnerPrestia
- Main IPC: H03D1/00
- IPC: H03D1/00

Abstract:
A system and method for providing code tracking in a CDMA based communications receiver. In example systems and methods, a CDMA receiver, such as a GPS receiver, receives a signal and demodulates the signal to yield a digital IF signal. The digital IF signal is down-converted to a received code signal. Early, prompt and late correlation results are determined by correlating the received code signal with early, prompt and late duplicates of the received code signal. The early, prompt and late correlation results are used to calculate a code phase error using a noise-floor independent function of all three correlation results.
Public/Granted literature
- US20090110134A1 Noise Floor Independent Delay-Locked Loop Discriminator Public/Granted day:2009-04-30
Information query
IPC分类: