SmartBridges sB3415-02, sB3415-03, sB3415-01 manual Cofdm

i n t e l l i g e n t w i r e l e s s p l a t f o r m

COFDM

COFDM involves modulating the data onto a large number of carriers using the OFDM technique. The Key features which makes it work, in a manner is so well suited to terrestrial channels, includes:

•Orthogonality (the “O” of COFDM);

•The addition of Guard interval;

•The use of error coding (the “C” of COFDM), interleaving and channel-state information

COFDM is resistant to multipath effects because it uses multiple carriers to transmit the same signal.

RIP

The most popular of the TCP/IP interior routing protocols is the Routing Information Protocol (RIP). RIP is used to dynamically exchange routing information. RIP routers broadcast their routing tables every 30 seconds by default. Other RIP equipments will listen for these RIP broadcasts and update their own route tables.

DHCP

DHCP stands for ‘Dynamic Host Configuration Protocol’ and is a means for networked computers to get their TCP/IP networking settings from a central server. Importantly, DHCP assigns IP addresses and other TCP/IP configuration parameters automatically.

SNMP

Short for Simple Network Management Protocol, a set of protocols for managing complex networks. The first versions of SNMP were developed in the early 80s. SNMP works by sending messages, called protocol data units (PDUs), to different parts of a network. SNMP-compliant devices, called agents, store data about themselves in Management Information Bases (MIB) and return this data to the SNMP requesters.

SYSLOG

In order to track information on events, device jobs, and packets flows, most security devices out put these events using the syslog information model.

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