What is the duration of a sub-frame and a frame in LTE? How many OFDM symbols per sub-frame? What is the transmit time interval (TTI) over which an allocation happens in the DL or UL?
Hi,
subframe length is 1ms and frame length is 10ms, TTI means one sub frame. DL and UL both are same configuration. there will be 7 OFDM symbol per SF or 6 symbol per SF if extended CP.
I saw a radio frame image which was consists of 10 sub frames. Each sub frame was showing PHICH and PCFICH. I know use of these two channels but want to know whether their positions are fixed or varies in each sub frame ?
What actually a OFDM symbol?How do you actually map it to the actual user data, lets say the user sends a bit 0 or 1?
