From: Performance evaluation of MIMO broadcast systems for advanced digital terrestrial TV
LTE-based 5G terrestrial broadcast | Advanced ISDB-T | |||
---|---|---|---|---|
Modulation | Cyclic prefix-OFDM | |||
Channel bandwidth | 5 MHz | 6 MHz | ||
Occupied bandwidth | 4.5 MHz | Normal mode: 5.83 MHz Compatible mode: 5.57 MHz | ||
Number of segments | 25 resource blocks | Normal mode: 35 Compatible mode: 33 + adjusting bands | ||
Bandwidth of segments | 180 kHz | 167 kHz | ||
FFT size | 41,472 | 8,192 | 16,384 | 32,768 |
Number of carriers | 12,150 | 7,561 | 15,121 | 30,241 |
Carrier spacing | 370.37 Hz | 771.60 Hz | 385.80 Hz | 192.90 Hz |
Scattered pilot ratio | 1/6, 1/12 | 1/3, 1/6, 1/12, 1/24, 1/48 | ||
Carrier modulation | QPSK,16QAM, 64QAM, 256QAM (uniform) | QPSK, 16QAM, 64QAM, 256QAM, 1024QAM, 4096QAM (uniform, non-uniform) | ||
Number of OFDM symbols per frame | 13 | 224 | 112 | 56 |
Effective OFDM symbol length | 2700 µs | 1296 µs | 2592 µs | 5184 µs |
Guard interval ratio | 1/9 | 1/4, 1/8, 800/8,192 | 1/4, 1/8, 1/16, 800/16,384 | 1/8, 1/16, 1/32, 800/32,768 |
Inner code | Turbo code | LDPC code | ||
Outer code | N/A | BCH code | ||
System | SISO | SISO, MIMO, MISO |