ACPM-7833-TR1 データシートの表示（PDF） - Avago Technologies
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ACPM-7833-TR1 Datasheet PDF : 20 Pages
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cdma 2000 1xRTT Characterization
System Description
CDMA2000 is the TIA’s standard for third generation
(3G) technology and is an evolution of the IS-95 CDMA
format. CDMA2000 includes 1X RTT in the single-carrier
mode and 3X RTT in the multi-carrier mode. This paper
describes the CDMA2000 1X RTT approach and its
performance with Avago Technologies 4x4 CDMA PAs,
ACPM-7833. CDMA2000 1X RTT, being an extension of
the IS-95 standard, has a chip rate of 1.2288Mchip/s.
However, in 1xRTT, the reverse link transmits more than
one code channel to accommodate the high data rates.
The minimum configuration consists of a reverse pilot
(R-Pilot) channel for synchronous detection by the Base
Transceiver System (BTS) and a reverse fundamental
channel (R-FCH) for voice. Additional channels such as
the reverse supplemental channels (R-SCHs) and the
reverse dedicated channel (R-DCCH) are used to send
data or signaling information. Channels can exist at
different rates and power levels.
Table 1 shows the transmitter specification in
CDMA2000 reverse link.
Table 1. Transmitter Specification in Reverse Link.
Specification
Spread Rate1
ERP at Maximum Output Power
Lower limit +23 dBm
Upper limit +30 dBm
Minimum Controlled Output Power
-50 dBm/1.23 MHz
Waveform Quality Factor and Frequency Accuracy
>0.944
Spurious Emission at
Maximum RF output
power offset frequency
within the range
SR1, Band Class 0(Cellular band)
885 kHz to 1.98 MHz
Less stringent of -42 dBc/30 kHz
or -54 dBm/1.23 MHz
1.98 MHz to 3.125 MHz
Less stringent of -54 dBc/30 kHz
or -54 dBm/1.23 MHz
SR1, Band Class1(PCS band)
1.25 MHz to 1.98 MHz
Less stringent of -42 dBc/30 kHz
or -54 dBm/1.23 MHz
1.98 MHz to 2.25 MHz
Less stringent of -50 dBc/30 kHz
or -54 dBm/1.23 MHz
3.125 MHz to 5.625 MHz
-13 dBm/100 kHz
2.25 MHz to 6.25 MHz
-13 dBm/1 MHz
Typical channel configurations below are based on the transmitter test
condition in the reverse link.
1) “Basic” Voice only configuration
– R-PICH @ -5.3 dB
– R-FCH @ -1.5 dB 9.6 kbps
2) Voice and Data configuration
– R-PICH @ -5.3 dB
– R-FCH @ -4.54 dB 9.6 kbps
– R-SCH1 @ -4.54 dB 9.6 kbps
3) Voice and Control configuration
– R-PICH @ -5.3 dB
– R-FCH @ -3.85 dB 9.6 kbps
– R-DCCH @ -3.85 dB 9.6 kbps
4) Control channel only configuration
– R-PICH @ -5.3 dB
– R-DCCH @ -1.5 dB 9.6 kbps
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