发明名称 |
Pseudorandom bit sequence generator |
摘要 |
The invention is a method and apparatus for generating a primary pseudorandom bit sequence consisting of a plurality of contiguous P subsequences. Each P subsequence consists of a start sequence of predetermined length followed by a sequence of trailing bits. The method comprises three steps. The first step consists of deriving a feedback bit from each generating sequence in a P subsequence in accordance with a specified rule where a generating sequence is any sequence of contiguous bits in the P subsequence having the same length as the start sequence. The bit that follows a generating sequence is called the trailing bit for that generating sequence. The second step of the method consists of determining a sequence of one or more modifier bits to be used in modifying the P subsequence. The third step of the method consists of modifying the P subsequence utilizing the one or more modifier bits.
|
申请公布号 |
US6307631(B1) |
申请公布日期 |
2001.10.23 |
申请号 |
US20000607471 |
申请日期 |
2000.06.30 |
申请人 |
LITTON SYSTEMS INC. |
发明人 |
TAZARTES DANIEL A.;MARK JOHN G.;TAZARTES DAVID I. |
分类号 |
G01C19/72;(IPC1-7):G01C19/72 |
主分类号 |
G01C19/72 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|