Barker code

A coding scheme used in direct sequence spread spectrum (DSSS) radio systems. Barker

code is a sequence of N values of +1 and –1, with N equaling 2, 3, 4, 5, 7, 11, or 13 bits. IEEE 802.11b wireless LANs (WLANs) operating at 1 Mbps and 2 Mbps use an 11-bit Barker code, 10110111000.The code has certain mathematical properties that make it ideal for modulating radio waves. The basic data stream is subjected to a swap algorithm with the Barker code to generate a series of data objects called chips. Each bit is encoded by the 11-bit Barker code, with each group of 11 chips encoding one bit of

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• abstruse
• AC-3 (Adaptive Transform Coder 3)
• AC-3 (Adaptive Transform Coder 3)
• AC (Alternating Current)
• A Carrier
• acceptance angle
• Access BPL (Access Broadband over Power Line)
• Access BPL (Access Broadband over Power Line)
• access broadband over power line (Access BPL)
• access broadband over power line (Access BPL)
• access charges
• access circuit
• Access Manager
• access node
• access point (AP)
• access rate
• access service
• access tandem switch
• account code
• accounting management
• ACD (Automatic Call Distributor)
• ACELP (Algebraic Code Excited Linear Prediction)
• ACK (ACKnowledgement)
• acknowledgement (ACK)
• ACL (Asynchronous Connectionless Link)