Nera WiLink-I 3000, System Manual

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208 WiLink-I Modular Base Station System Manual
BER Bit Error Rate. In a digital transmission, BER is the percentage of
bits with errors divided by the total number of bits that have been
transmitted, received or processed over a given time period.
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
BW
Bandwidth
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.