Medium Access Control (MAC) and Physical Layer (PHY) - CISE

4-June-07 P1901_PRO_016_r0
18 0x350
Table 4 Scrambling seed values
All the pseudorandom generators will advance once for each pair of extracted carriers. If no bit extraction is
performed (x=y=0) the pseudorandom generators will not advance. The structure of each pseudorandom
generator that generates a u word from the extracted t’ word is shown in Figure 13
The symbol number value shall be 1 for the channel reference symbol, and shall be incremented by 1 for every
symbol there after.
u 19
OUTPUT
BIT 18 (MSB)
OUTPUT
BIT 0 (LSB)
u 1
t´ 19
10 9 8 7 6 5 4 3 2 1
PN GENERATOR 0
10 9 8 7 6 5 4 3 2 1
Symbol number (MSB)
Symbol number (LSB)
t´ 1
Figure 13 Scrambling
PN GENERATOR 18
Submission page 52 UPA-OPERA
XOR