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To: slacker711 who wrote (19414)	4/8/2002 5:25:04 PM
From: JohnG	Read Replies (2) \| Respond to of 34857

Data rate comparisons are easy to find on QCOM's web site: 1) qualcomm.com GSM operators can have all of this if they simply move to GSM1X, QCOM's new conversion standard being developed now at Samsung and elsewhere 1) qualcomm.com After the World Soccer finals, I am sure it will be quite clear from what direction the best system choices will come. Opertors will decide they can't afford to double their no of cell sites. Governments will decide that they do not want twice as many cell sites littering the cities. Even now we see the China Unicom and China Telecom touring Korean facilities. "" The Chinese delegation said Samsung's CDMA system operations in China were well under way, praising the superiority of Samsung's cdma2000 1x EV-DO handsets."" Monday April 8 12:00am Asia Pulse Copyright 2002 Asia Pulse Pte Limited A delegation from China Unicom made a tour of Samsung Electronics Co.'s information technology (IT) center in Suwon Monday for a test run of code division multiple access (CDMA) mobile handsets and services, Samsung said. The delegation, led by China Telecom Chairman Wang Jianzhou, arrived in Seoul Saturday on a six-day business trip to inspect the Korean mobile telecom industry. It plans to visit SK Telecom Tuesday and KTF and Lucent Technologies Wednesday. China Telecom, which is the biggest fixed-line telecom carrier in China, test-launched CDMA service in January last year in cooperation with its Korean partners Samsung and LG Electronics. The Chinese telecom carrier began its commercial CDMA service in China the same day. The Chinese delegation said Samsung's CDMA system operations in China were well under way, praising the superiority of Samsung's cdma2000 1x EV-DO handsets. "Wang's visit raises high hopes that Samsung will do well in (China's) second bidding for CDMA systems slated for the second half of the year," said Samsung officials.

To: slacker711 who wrote (19414)	4/8/2002 5:38:21 PM
From: Eric L	Read Replies (1) \| Respond to of 34857

Slacker, << Has GSM instituted any new CODEC's since '98? I have no idea if AMR is the first new codec since the original GSM implementations. >> First CODEC was full rate and half rate was introduced according to plan (around 94/95) followed quickly by EFR in maybe 1996. EVRC is the 3rd cdma codec and the first one truly sucked. From a voice quality point of view EFR was a big improvement. I consider it to be better than cdma with EVRC , but that is subjective, and EVRC certainly has improved voice quality.. Ironically Nokia was one of the first to use EVRC in cdma handsets I am told although I can't remember the model they originally introduced it in as they have so many "i" versions. I've never talked to anyone in industry that would credit EVRC with giving cdmaOne close to 5x efficiency to current GSM. Closer to 3 is general rule and GSM capacity improvements over the last 4 or 5 years have been more than CODEC although I don't really know what specifically they are, but I do no that some relate to frequency hopping. I do suppose that it is possible that by tuning a network to get maximum efficiency out of EVRC, at the possible expense of voice quality, cdmaOne might inch up towards that 5x numbers, and I'm sure that Qualcomm can simulate 5x or better in their labs, but there are labs and there are real live networks. - Eric -

To: slacker711 who wrote (19414)	4/8/2002 6:08:55 PM
From: 49thMIMOMander	Respond to of 34857

Slacker, you are such a nice EDGE guy, please add one line of EDGE (3xGSM) to your little understanding <my understanding has always been that CDMA was 6-9x more spectrally efficient than AMPS. The GSM-TDMA family was estimated to be 3-4x AMPS.> 9-12??? Remember those little linear PA-amplifiers. Btw, why we are at this level, with one user running 2-10-whatever Mbps in the middle of on QCDMA cell, why is it called CDMA??? (why not point-point QAM??) What about 4 users?? (why not FDMA with lousy cos-sine waves) What about really lots of users, where this Q-guy said the magic doesn't work anymore, power control is really,really,really,really impossible, not enough capacity to even control the power, forget about anything else??