about UMTS FDD

works in 5Mhz frequency
separate band for UL and DL
each radio frame is of 10 ms with 15 time slots
each slot can take 2560 chips
which makes 3.84 Mchps

1 sec = 1000 milli secs
= 100 radio frames
= 100 * 15 slots
= 100 * 15 * 2560 (each slot can carry 2560 chips)
= 3.84 Mchps