OSI layers: 7: application 6: presentation 5: session 4: transport 3: network 2: data link 1: physical transports: capacity bandwidth * log_2 (signal/noise) wired three-wire: data, power, ground two-wire: data+power, ground transmission line waveguide wireless RF FCC Part 15: unlicensed devices ISM: Industrial, Scientific, Medical optical acoustic modulation: PPM: Pulse-Position Modulation PCM: Pulse-Code Modulation OOK: On-Off Keying FSK: Frequency-Shift Keying BPSK: Binary Phase-Shift Keying QAM: Quadrature Amplitude Modulation OFDM: Orthogonal Frequency-Division Multiplexing FHSS: Frequency-Hopping Spread Spectrum DSSS: Direct-Sequence Spread Spectrum UWB: Ultra-WideBand channel sharing: ALOHA Polling Token Ring TDMA: Time-Division Multiple Access FDMA: Frequency-Divsion Multiple Access CSMA: Carrier-Sense Multiple Access CD: Collision Detection CA: Collision Avoidance 1-persistent: transmit when clear nonpersistent: random backoff p-persistent: probability to transmit CDMA: Code-Division Multiple Access "PDMA": Physical-Division Multiple Access errors: detection, correction handshaking block, convolution codes parity, checksum, Hamming, Reed-Solomon, Turbo protocols: routing IPv4, IPv6 SLIP UDP, TCP HTTP sockets Internet 0: meeting, paper i0.3.IO.44.cad i0.3.IO.44.thtp.asm i0.3.serial.44.cad i0.3.serial.44.packet.asm i0.3.hub.4.cad thtp.py radios: oscillator, mixer, PA, LNA, IF, I/Q demod, baseband filters Q, antenna gain software radio Micrel RFM, Silicon Labs hello_radio assignment: build a network update your final project page with: goal design components processes schedule sections: radios (Charlie): Tuesday 1:00 networking (Neil): Wednesday 3:00