Hardware Integration Guide
22
Proprietary and Confidential - Contents subject to change
4112880
dB
Decibel = 10 x log
10
(P1 / P2)
P1 is calculated power; P2 is reference power
Decibel = 20 x log
10
(V1 / V2)
V1 is calculated voltage, V2 is reference voltage
dBm
A logarithmic (base 10) measure of relative power (dB for decibels); relative to
milliwatts (m). A dBm value will be 30 units (1000 times) larger (less negative)
than a dBW value, because of the difference in scale (milliwatts vs. watts).
DC-HSPA+
Dual Carrier HSPA+
DCS
Digital Cellular System
A cellular communication infrastructure that uses the 1.8 GHz radio spectrum.
DL
Downlink (network to mobile)
DUN
Dial-Up Networking
DRX
Discontinuous Reception
DSM
Distributed Shared Memory
DUT
Device Under Test
EDGE
Enhanced Data rates for GSM Evolution
eHRPD
Evolved High Rate Packet Data — Enhances traditional
to enable
to CDMA handover.
EIRP
Effective (or Equivalent) Isotropic Radiated Power
EMC
Electromagnetic Compatibility
EMI
Electromagnetic Interference
ERP
Effective Radiated Power
ESD
Electrostatic Discharge
FCC
Federal Communications Commission
The U.S. federal agency that is responsible for interstate and foreign
communications. The FCC regulates commercial and private radio spectrum
management, sets rates for communications services, determines standards for
equipment, and controls broadcast licensing. Consult
FDMA
Frequency Division Multiple Access
FER
Frame Error Rate — A measure of receive sensitivity.
firmware
Software stored in ROM or EEPROM; essential programs that remain even when
the system is turned off. Firmware is easier to change than hardware but more
permanent than software stored on disk.
FOTA
Firmware Over The Air — Technology used to download firmware upgrades
directly from the service provider, over the air.
FOV
Field Of View
Table 5-1: Acronyms and definitions (Continued)
Acronym or term
Definition
