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參數(shù)資料
| 型號： | CHP0232-PM-000T |
| 元件分類： | 放大器 |
| 英文描述： | 824 MHz - 849 MHz RF/MICROWAVE NARROW BAND MEDIUM POWER AMPLIFIER |
| 封裝： | PM6, 6 PIN |
| 文件頁數(shù)： | 3/8頁 |
| 文件大?。?/td> | 611K |
| 代理商： | CHP0232-PM-000T |
3236 Scott Boulevard
Santa Clara, California 95054
Phone: (408) 986-5060
Fax: (408) 986-5095
CHP0232-PM
Preliminary Product Information - July 2002
(3 of 8)
TM
CDMA 1xRTT
In 1999 the International Telecommunications Union
specified five different IMT-2000 standards colloquially known
as Third Generation (3G) mobile phone services. Besides the
WCDMA standard used by NTT Ducomo in Japan, the most
important other 3G technology is Qualcomm’s CDMA2000.
CDMA2000 is available in several subsets, the first two of
which are now in commercial operation.
CDMA2000 1xRTT roughly doubles a network voice
capacity compound to the original CDMA One
Technology. It also enables packet data transfers at up to
307 KB/s on a single 1.25 MHz carrier.
CDMA2000 1xEV provides up to 2.4 MB/s packet data
transfers on a single 1.25 MHz carrier in its current “data
only” Phase 1 (1xEV-DO) version. Phase 2 (1xEV-DV)
will provide up to 4.8 MB/s of integrated voice and data
communications
CDMA 3x will operate on newly licensed 5 MHz carriers
and will potentially offer 3 times the number of voice and
date channels, or higher data rates.
First launched in South Korea, operators in the United
States and elsewhere are expected to migrate to CDMA2000
1xRTT in 2002.
The rapid progression from 2nd generation
CDMAOne to CDMA2000 is an evolutionary migration.
Service operators have the option to implement CDMA2000
1xRTT at their existing 1.25 MHz frequency bands. In this case
the RF section of both the mobile phone and base station
remains the same. But there are significant changes in the chan-
nel configuration which ultimately creates a need for additional
linearity within the Power Amplifier Module. The major influ-
ence of the multi-channel configuration is a change in the Code
Complementary Distribution Function (CCDF) commonly
referred to as the peak-to-average ratio (PAR).
The handset re-use channel configuration is shown in
Figure 1. Reverse Channel Configuration Details – Traffic
Channels Defined. The parameters of each channel as detailed
and interpreted from the CDMA2000 standard is detailed in
Figure 2. Channel Configurations as Set Up in ESG Signal
Source.
REVERSE CDMA CHANNEL
(1.25 MHZ OR 5 MHZ CHANNEL RECEIVED BY BASE STATION
ACCESS
CHANNEL
REVERSE
TRAFFIC
CHANNEL
(RC 1 OR 2)
ENHANCED
ACCESS
CHANNEL
OPERATION
REVERSE
COMMON
CONTROL
CHANNEL
OPERATION
REVERSE
TRAFFIC
CHANNEL
OPERATION
(RC 3 TO 6)
REVERSE
FUNDAMENTAL
CHANNEL
0 TO 7 REVERSE
SUPPLEMENTAL
CODE CHANNELS
REVERSE
PILOT
CHANNEL
ENHANCED
ACCESS
CHANNEL
REVERSE
PILOT
CHANNEL
REVERSE
COMMON
CONTROL CHANNELS
REVERSE
PILOT
CHANNEL
0 TO 1 REVERSE
DEDICATED
CONTROL CHANNELS
0 TO 1 REVERSE
FUNDAMENTAL
CHANNEL
0 TO 1 REVERSE
DEDICATED
CONTROL CHANNELS
REVERSE
POWER CONTROL
SUBCHANNEL
Figure 1. Reverse Channel Configuration Details – Traffic Channels Defined.
Channels on Traffic
CCDF PAR
Channel 1: FCH
5.25
Channel 2: PCH + FCH
4.70
Channel 3: PCH + DCCH
7.30
Channel 4: PCH + FCH + DCCH
7.20
Channel 5: PCH + FCH + SCH
6.10
Channel 6: PCH + DCCH + SCH
6.20
DCCH = Dedicated Control Channel
FCH = Fundamental Channel
PCH = Pilot Channel
SCH = Supplemental Code Channel
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