发明名称 |
Pseudo-noise sequence generating apparatus |
摘要 |
<p>A pseudo-noise generating apparatus capable of starting a pseudo-noise sequence from an arbitrary phase using compact processing circuitry. Tap selection patterns corresponding to a plurality of phase shift amounts are stored in advance in a ROM. By giving a phase shift amount to the ROM and setting the corresponding tap selection pattern in AND gates, the pseudo-noise sequence generated by the pseudo-noise generator is shifted in phase, and is loaded into a shift register. After setting a new phase amount in the ROM, the contents of the shift register are transferred into a shift register in the pseudo-noise generator. By repeating this operation, the desired phase shift is accomplished as a sum of a plurality of phase shift amounts. <IMAGE></p> |
申请公布号 |
EP0938192(B1) |
申请公布日期 |
2004.08.04 |
申请号 |
EP19980122157 |
申请日期 |
1998.11.25 |
申请人 |
FUJITSU LIMITED |
发明人 |
NAKAMURA, TAKAHARU;KAWABATA, KAZUO;OBUCHI, KAZUHISA;HAMADA, HAJIME |
分类号 |
G06F7/58;H03K3/84;H04J13/00;H04J13/10;(IPC1-7):H04B1/707;H04L9/22 |
主分类号 |
G06F7/58 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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