发明名称 |
METHOD FOR EFFICIENT SAMPLING IN A CORRELATOR |
摘要 |
A DIRECT SEQUENCE SPREAD SPECTRUM RECEIVER SAMPLES AN INCOMING SIGNAL AT A LOW NON-INTEGER SAMPLE RATE RELATIVE TO THE INPUT DATE RATE. THE SAMPLE RATE IS AN INTEGER RATE RELATIVE TO A DEFINED DATA SEGMENT. AS MULTIPLE SEGMENTS ARE SAMPLED, THE NON-INTEGER SAMPLE RATE CAUSES BIT/CHIP SAMPLES TO PROCESS RELATIVE TO THE INCOMING DATA. BECAUSE THE SAMPLE RATE IS AN INTEGER RELATIVE TO A DATA SEGMENT, THE SAMPLES ARE SUBSTANTIALLY STATIONARY RELATIVE TO EACH SEGMENT. SUCH A METHOD IS USEFUL IN GLOBAL POSITIONING SATELLITE (GPS) SIGNAL PROCESSING WHEREIN THE TIME TO FIRST FIX IS MINIMIZED BY HAVING TO CORRELATE FEWER SAMPLE POINTS IN THE ACQUISITION PROCESS.(FIGURE 4) |
申请公布号 |
MY129436(A) |
申请公布日期 |
2007.04.30 |
申请号 |
MY1997PI03168 |
申请日期 |
1997.07.12 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
DANIEL DAVID HARRISON;JEROME JOHNSON TIEMANN |
分类号 |
H03M1/12;G01S1/00;G01S5/00;G01S19/09;G01S19/24;G01S19/29;G01S19/30;G01S19/34;G01S19/37;G01S19/42;G06F17/15;H04B1/16;H04B1/708;H04B1/709;H04B1/7107;H04B7/26;H04W52/02 |
主分类号 |
H03M1/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|