WCDMA and picture messenging

First off, CDMA and WCDMA are two completely different networks. In reality, WCDMA is more similar to GSM than it is to CDMA. The reason why the acronym is similar is because they both use a spread spectrum air interface. In other words, the way the signals are transmitted between the phone and the tower are quite similar. However, everything else is different. WCDMA is just a GSM network using a code division multiplexing instead of time division multiplexing. This is why you can see phones that can do WCDMA and GSM.

CDMA runs on an ANSI-41 network which is totally different from GSM. There are phones under development that will do CDMA and GSM, but those are GAIT-like phones that lack any integration between the two technologies because the differences between the two networks.

WCDMA and GSM, however, are more easily integrated because they run on the same network core.

 

WoW Bobolito, 5000 posts your getting up there.

 

As to the second part of your question, multi-tasking should be possible. A lot of things should be possible. However, right now wCDMA-GSM handoffs are not working as they should. This problem will be solved.

Multitasking is really more of a network issue since its feasibility depends on the available bandwidth.

The Sanyo V801SA (Vodafone Japan) Link is designed to work on wCDMA in Japan (only) and GSM/GPRS in foreign countries (only).

 

techinically the WCDMA and it's related core was developed specifically for GSM....

for Pix messaging for CDMA providers uses 1xrtt (which is what i think he ment to refer to). 1xrtt/1x ev-do is to CDMA what GPRS/WCDMA is to GSM both theoretically allow for higher bandwith and higher data transfer speeds on their respective networks.

the picture phones use these networks to transfer pictures...if you used tradional CDMA/GSM, it would take quite a while longer to upload/send pix messages...

and to cut of a question now, you cannot send pictures from one carrier to another--the MMS systems are not linked yet like they are for tradional SMS.

MMS = Multimedia Messaging System (for pix messages and the like)
SMS = Simple Messaging System (for text messages)....EMS Enhanced Messages System for 'souped' up text messages....

 

opse.