×Jan-03-2024
Toolbox: PBCH signal generatorApple Inc is looking for a 4G/5G system engineer on mobility control. Based in California, USA (Bay Area or San Diego). Details Here.
| Parameter | Value |
|---|---|
| v | |
| Input bits (0,1,...) | |
| scrambling seq (0,1,...) | |
| scrambled bits (0,1,...) | |
| Modulation scheme | QPSK |
| Modulated signal |
Scrambling
The UE shall assume the block of bits b(0), ..., b(Mbit-1), where Mbit is the number of bits transmitted on the physical broadcast channel, is scrambled prior to modulation, resulting in a block of scrambled bits according to
where the scrambling sequence c(i) is given by scrambling. The scrambling sequence generator shall be initialized with at the start of each SS/PBCH block where
- for Lmax=4, v is the two least significant bits of the SS/PBCH block index
- for Lmax=8 or Lmax=64, v is the three least significant bits of the SS/PBCH block index
with Lmax being the maximum number of SS/PBCH blocks in an SS/PBCH period for a particular band as given by TS 38.104.
Modulation
The UE shall assume the block of bits are QPSK modulated as described in modulation, resulting in a block of complex-valued modulation symbols dPBCH(0),...,dPBCH(Msymb-1).
Mapping to physical resources
TBD