TD-SCDMA (LCR) - Time Division Synchronous CDMA

Frequency bands

Band I
channels 9512 – 9588
channels 10062 – 10113

1900 to 1920 MHz
2010 to 2025 MHz

Band II
channels 9262 – 9538
channels 9662 – 9938

1850 to 1910 MHz
1930 to 1990 MHz

Band III
channels 9562 – 9638

1910 to 1930 MHz

Channel raster

200 kHz (1.6 MHz channel spacing)

Channel bandwidth

1.6 MHz

Modulation

QPSK, 8PSK, 16QAM

Chip rate

1.28 Mcps

Access format

CDMA/TDMA/TDD

Receiver

NodeB: Joint Detection
UE: Rake

Spreading factors

DL: 1 or 16
UL: 1 to 16

Frame structure

2 sub-frames per TDMA frame (10 ms)
7 timeslots per sub-frame (5 ms)
864 chips per time slot, equivalent to 675 µs
symmetric/asymmetric operation

Data rate

CS: 12.2 kbits/s, 64 kbits/s, 144 kbits/s,
384 kbits/s, 2048 kbits/s
PS: 9.6kbits/s, 64 kbits/s, 144 kbits/s,
384 kbits/s, 2048 kbits/s

Speech

Adaptive multirate (AMR), data rate
(4.75 kHz to 12.2 kHz) depending on cell capacity and reception quality

Power control

Yes, in 1, 2 or 3-dB steps