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To: engineer who wrote (12880)	6/25/2000 4:12:00 PM
From: Eric L	Respond to of 13582

engineer, << So again, what is to stop the Korean PCS mfgs who already make 1800 MHZ CDMA from going in there and selling stuff as fast as they can? >> I remain a little confused about whether or not there is an existing implementation of CDMA in 1800 MHZ spectrum (1710 - 1785 MHz paired with 1805 - 1880 MHz). I have not been able to find any handsets that operate to anything other than one of the two common CDMA air interface standards (Cellular 824-894 MHz - TIA/EIA/IS-95A or PCS 1850-1990 MHz - ANSI J-STD-008). In addition the presentation by Bill Bold of Qualcomm called "Maximizing the 3G Market: Perspectives on Spectrum Administration and Evolution to 3G" has several allusions to 1800 MHZ spectrum. cdg.org * slide 10 (IMT-2000 Standards Compendium) shows GSM 1800 band with comment "Stranded at 2 or 2.5G w/o CDMA overlay" * Slide 15 (IMT-2000 Spectrum Allocations) shows 1800 MHZ spectrum in Korea allocated to IMT-2000 along with the bands above it. * slide 19 (3G From Different Paths) has a bullet stating: "1800 MHz CDMA 1X MC overlays in existing GSM spectrum". I'm wondering if anybody can add to this relative to whether or not there is any implementation of CDMA in 1800 MHZ spectrum? - Eric -

To: engineer who wrote (12880)	6/25/2000 8:04:00 PM
From: Eric L	Respond to of 13582

engineer, Update. Your recall is good. Found this (not much else after quit a bit of searching on Korean PCS spectrum): "The cloud on the horizon for both SK and Shinsegi is the looming competition from three new PCS service providers. In 1996, three companies, Korea Telecom, LG Telecom and Hansol PCS were each awarded a nationwide PCS service license with 10 MHz of spectrum in the band 1750-1780 MHz. Like SK and Shinsegi they are required to use CDMA technology and each have begun the deployment of extensive networks." cdg.org This certainly falls within the GSM 1800 spectrum which is 1710 - 1785 MHz paired with 1805 - 1880 MHz. - Eric -