MSC: 移动业务交换中心 BSC : 基站控制器 MC: 短消息中心
HLR: 归属位置寄存器 BTS: 基站收发信台 VM: 语音信箱
VLR: 拜访位置寄存器 OMC: 操作维护中心 AC: 鉴权中心
SCP: 业务控制点
ZIF:Zero Intermediate Frequency
LNA:Low noise Amplifier
PA:Power Amplifier
AGC:Automatic Gain Control
VCO:Voltage Controlled OScillator
TCXO:Temperature Controlled Crystal Oscillator
PLL:Phase Lock Loop
PDM:Pulse Density Modulation
LPF:Low Pass Filter
SBI:Serial Bus Interface
RSSI:Received Signal Strength Indication
VGA:variable gain amplifier
LO:Local Oscillator
RAS:Rf Analog Subsystem:是对RF signal path的RF Amp AGC特性进行补偿使其有linear特性，从而使amp能有希望的gain的system.
DVGA:Digital Variable Gain Amplifier,为了进行细微的GAIN调整而用在Rx AGC上面，输出值具有线性。根据终端机特性，用offset来调整。
LO Filter:
1.Prevent the noise at one frequency below the RX from being mixed with the Rx down to the IF.
2.Provide the Isolation from the Tx leakage
RxIF Filter:
1.Selects the channel that is to be passed on the receiver band-end
2.Prevents off-channel signals from reaching the back-end,where inter modulation distortion would be severe,due to the
large levels of gain present
3.Because the interfering channels do not reach the back-end the mixer premarily determines the overall IP3i
4.Attenuates the 2nd IF image response
5.SAW filters are the component of choice for most IF filter applications.They provide the best out-of-band rejection
at reasonable size and cost.Crystal and L/C filters can also be used atthe expense of lower performance
TX DA: DA => Driver Amplifier
PCS : Personal Communications Service
MMS : Multimedia Messaging Service
AMPS: Advanced Mobile Phone Service (AMPS)
CDPD: Cellular Digital Packet Data
CMT : Cellular Messaging Teleservice
CNAP: Calling Name Presentation
CNI : Calling Number Identification
CPN : Calling Party Number
CPT : Cellular Paging Teleservice
DTMF: Dual Tone Multiple Frequency
GSM : Global System for Mobile Communications
PM : Privacy Mode
R-UIM : Removable – User Identity Module
QPCH: Quick Paging Channel
RC : Radio Configuration
SCRM: Supplemental Channel Request Message
SME : Signaling Message Encryption
SMS : Short Message Service
SRQM: Service Request Message
TMSI: Temporary Mobile Station Identity