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AN-0974
APPLICATION NOTE
One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Te l: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
Multicarrier TD-SCMA Feasibility
by Brad Brannon, Bill Schofield, and Yang Ming
Rev. 0 | Page 1 of 28
ABSTRACT
The goal of this application note is to demonstrate the feasibility
of implementing a multicarrier TD-SCDMA transceiver and
describe what the major subsystem performances must be.
POWER
AMPLIFIER
POWER DETECT
AND GAIN CONTROL
ANTENNA
BPF
BAND
SELECT FILTER
90°
0°
TUNING
CONTROL
BPF ADC DSP
CLOCK DISTRIBUTION
LPF DAC
LPF DAC
DUC
AND PAPR
DSP
DSP
DSP CLUSTER
NETWORK
INTERFACE
AD6633
AD9516
AD9230
ADL5355
ADF4350
ADF4106
AD8362
ADL5372
AD9779
AD9788
PA PREDISTORTION OBSERVATION PATH
07663-001
Figure 1. Direct Upconversion Architecture
