For clarification, existing CDMA cell service spreads the carrier over 1.25 MHz. 1.25 MHz came from the allocation rules that were employed for analog cellular. This is the service for North America (ANSI-95, or, more recently, cdma2000).
"Wideband CDMA," at least in the context of cell service, refers to the ETSI effort to incorporate CDM in their standards. WCDMA spreads the carrier over ~5 MHz.
You don't know it is disruptive until you field it.
Every new RF technology I've seen falls short of its promises (I'm in the industry). For example, CDMA cellular (a second cousin of UWB) was originally claimed to provide 40X capacity in a 1.25 MHz band over simple analog cellular. When it was actually fielded, it was found to be less than 10X. Significant, yes, but there were other ways to get close to 10x that weren't as complicated or expensive.
Once we get past the hype of UWB, I predict a similar disappointment factor.
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For clarification, existing CDMA cell service spreads the carrier over 1.25 MHz. 1.25 MHz came from the allocation rules that were employed for analog cellular. This is the service for North America (ANSI-95, or, more recently, cdma2000). "Wideband CDMA," at least in the context of cell service, refers to the ETSI effort to incorporate CDM in their standards. WCDMA spreads the carrier over ~5 MHz.
You don't know it is disruptive until you field it. Every new RF technology I've seen falls short of its promises (I'm in the industry). For example, CDMA cellular (a second cousin of UWB) was originally claimed to provide 40X capacity in a 1.25 MHz band over simple analog cellular. When it was actually fielded, it was found to be less than 10X. Significant, yes, but there were other ways to get close to 10x that weren't as complicated or expensive. Once we get past the hype of UWB, I predict a similar disappointment factor.