Nera WILINK I System Manual page 207

Glossary
BPSK Binary Phase-Shift Keying. A data transfer technique. BPSK transmits data
using two phase modulation signals, one phase representing a binary one,
and the other representing a binary zero. The signal is divided into bits;
their status is determined by the preceding wave. If the wave changes, for
example, the signal is reversed.
BST Base Station
Bandwidth
BW
BWA Broadband Wireless Access
CBR Constant Bit-Rate
CG Continuous Grant. Also known as Unsolicited Grant Services (UGS), is
tailored for carrying constant bit- rate (CBR) real-time services
characterized by fixed size data packets on a periodic basis such as VoIP or
E1/T1. Service parameters include unsolicited grant size (packet size) and
normal grant interval (sample interval).
CIR Committed Information Rate. The rate (in bits per second) at which a
network guarantees to transfer information under normal conditions,
averaged over a minimum increment of time.
cPCI Compact Peripheral Component Interface. a new standard for computer
backplane architecture and peripheral integration, defined and developed
by the peripheral component interconnect (PCI) industrial computers
manufacturers group (PICMG). Designed to provide rugged, high-density
systems.
CPE Customer Premise Equipment. Communications equipment that resides on
the customer's premises.
CPLD Complex Programmable Logic Device
CRC Cyclical Redundancy Check. A common technique for detecting data
transmission errors, in which the frame recipient calculates a remainder by
dividing frame contents by a prime binary divisor and compares the
calculated remainder to a value stored in the frame by the sending
equipment.
CSMA/CD Carrier Sense Multiple Access with Collision Detection. Media-access
mechanisms wherein devices ready to transmit data first check the channel
for a carrier. If no carrier is sensed for a specific period of time, a device can
transmit. If two devices transmit at once, a collision occurs and is detected
by all colliding devices. This collision subsequently delays retransmissions
from those devices for some random length of time. Ethernet and IEEE
802.3 use CSMA/CD access.
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WILINK I MODULAR BASE STATION SYSTEM MANUAL