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D1. D1. D1. D2. D2. D2. CLK. CLK. CLK. D3. D3. D3. Ad-Hoc Cells. Black Cell. Blue Cell. Red Cell. Focus on the communication within the cell. Transmitter and Receiver within Ad-Hoc Cells (Example). Tx. Rx. Signal. TDMA. Time. Signal. TDMA/FDMA. FDMA. Frequency. time.
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D1 D1 D1 D2 D2 D2 CLK CLK CLK D3 D3 D3 Ad-Hoc Cells Black Cell Blue Cell Red Cell Focus on the communication within the cell
Signal TDMA Time Signal TDMA/FDMA FDMA Frequency time Frequency Multiplexing Scheme: TDMA/FDMA Signal
D1 D2 CLK D3 Example of One Ad-Hoc Cell Central CLK is slow, comm w/ everyone, separates T1,T2,T3 D1 = Dust Particle 1
Tx Sensor ADC Rx L1 CPU L2 Dust Detail Digital Signal --- Binary Frequency Shift Keying (BFSK) in transmiter
f1 f1 f3 f2 f1-Rb f1+Rb f1-Rb f2-Rb f3-Rb f3+Rb f1+Rb f2+Rb Use FSK-Based Transceivers Amplitude Amplitude Frequency Frequency