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Technology Stocks : The *NEW* Frank Coluccio Technology Forum -- Ignore unavailable to you. Want to Upgrade?

To: Frank A. Coluccio who wrote (5248)	3/18/2002 8:52:56 AM
From: Dave	Read Replies (2) \| Respond to of 46821

Frank, I lurk on your thread and was hoping you could answer this question for me. I am currently invested in two location "plays", TRDO and TSYS. Both of these companies offer a solution that will route a wireless 911 call to the nearest PSAP. Today, Cingular announced that they will implement the system provided by TRDO. In Oct of 2001, Cingular also announced they will implement TSYS's solution. Therefore, the question I pose, why would Cingular implement two different solutions for the same purpose within their network? Thanks....

To: Frank A. Coluccio who wrote (5248)	3/19/2002 4:40:46 AM
From: elmatador	Read Replies (1) \| Respond to of 46821

DoCoMo plans 4G commercial launch by 2010 By Total Telecom staff 18 March 2002 <<Like I say, there won't be a need to FTTH.>> With 3G struggling to get off the ground, NTT starts tests for a 100Mbps 4G text network NTT DoCoMo said on Monday that it has begun constructing an "experimental" system for fourth-generation (4G) mobile communications featuring data transmission speeds of more than 100 megabits per second (Mbps) downstream and 20 Mbps upstream – about 260 times faster than DoCoMo's current 3G service. The system, to include base stations and mobile station equipment, will demonstrate key technologies for a 4G wireless communications system that NTT DoCoMo hopes to launch commercially by 2010. 4G communications will feature extremely high-quality video equal to that of high-definition television, DoCoMo said - more than double the resolution of conventional analog television. What is 4G? Have your say here The company said that "practical evaluations" of key technologies for its 4G system will begin "sometime around this summer" so it can begin demonstrating some of the features of 4G. A 4G wireless system offering high-speed transmission of large-capacity data requires a bandwidth of approximately 100 MHz, DoCoMo said. When using a channel with such a broad bandwidth, however, transmission quality can be impaired by multipath, or the interference of secondary signals reflected off buildings, mountains and other surrounding objects. DoCoMo said its experimental 4G system will employ variable spreading factor (VSF) and orthogonal frequency code division multiplexing (OFCDM) technologies to mitigate the impact of severe multipath interference and thereby achieve a broad-bandwidth, large-capacity wireless system available across Japan.