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To: quidditch who wrote (29416)	5/7/1999 12:22:00 PM
From: Ramus	Read Replies (3) \| Respond to of 152472

Thanks Steven, Here is the verbiage from the ETSI UTRA W-CDMA ITU proposal regarding the TDMA mode .... "TDD mode: There are a maximum of 128 orthogonal downlink channels available, some of which are allocated for downlink control channels. This leaves approximately 120 orthogonal channels for user traffic. The reason why the maximum number of channels in TDD is only 50% of that in FDD is the UL/DL sharing of one 5 MHz carrier in TDD." Not sure of your question "TDMA survives"? It is possible to have time diversity and code diversity at the same time. In other words we can separate channels in time by turning them on and off so they don't interfere with each other..separation in time space. And of course we can also give channels unique orthogonal codes to separate them in code space. Walt