Yes, 64 Channel are inside 20Mhz (in reality if i do not mistake subcarriers are something like 10khz each other, the multiplexing of many users in the same Channel is done by assigning a SET of subcarriers to users)... 20Mhz is the intermediate frequency modulation (the output of IFFT converte to analogo, before the main modulation at 5GHz)
Don't forget Collins radio in the 50's. Kineplex used coherent synchronous signaling techniques.
intresting
thank you
13:25 why 64 channels with a span of 20MHz occupy 5GHz bandwidht? How latge is every channel? I thought in OFDM each channel is 64KHz or less
Yes, 64 Channel are inside 20Mhz (in reality if i do not mistake subcarriers are something like 10khz each other, the multiplexing of many users in the same Channel is done by assigning a SET of subcarriers to users)... 20Mhz is the intermediate frequency modulation (the output of IFFT converte to analogo, before the main modulation at 5GHz)
@@albertosimeoni7215 grazie Alberto