Ultra narrow band and ultra wide band modulation compared

被引：0
|
作者：
Stryzak, B
Walker, HR
机构：
来源：
INTERNATIONAL CONFERENCE ON COMPUTING, COMMUNICATIONS AND CONTROL TECHNOLOGIES, VOL 6, POST-CONFERENCE ISSUE, PROCEEDINGS | 2004年
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暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Ultra Wide Band and Ultra Narrow Band modulation can be shown to be mathematically related methods, but with widely different characteristics. In some variations, they are both ON/OFF amplitude pulse position methods. UWB is mostly OFF, while UNB is ON for most of the bit period. UWB generates a large number of sidebands that must be to detect the signal. Some sources say it has no carrier. UNB; has a strong CW carrier and removes the sidebands with ultra narrow band filters, since they are of no value to the detected signal. UWB requires a very broad noise bandwidth. UNB transmits only a single frequency, hence has a very narrow noise bandwidth. The same mathematical formulas apply to both in the spectral analysis.
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页码：155 / 160
页数：6
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