SlimWiFi: Ultra-Low-Power IoT Radio Architecture Enabled by Asymmetric Communication
summary
Claims a working radio that drops Wi‑Fi transmitter hardware to simple OOK plus open‑loop oscillator and still decodes on unmodified Wi‑Fi APs by exploiting asymmetric communication and receiver reconfiguration. Implemented as PCB prototype and an IC tape‑out, it achieves about 100 kbps at tens of meters (paper reports up to 60 m, prototyped ~40 m), cuts transmit power ~18 dB and lowers end‑to‑end power to tens of microwatts (19 µW prototype, 90 µW IC), with software‑side decoding and convolutional fixes to recover OFDM mapping errors.
AI-written summary · about
chapters (12)
- 0:00Intro
- 0:29Ultra-low-power communication
- 0:45New radio architecture for ULP communication
- 3:22Challenge 1: incompatible modulation
- 3:40Customized gateway?
- 6:17Asymmetric demodulation
- 6:53Errors introduced by OFDM processing
- 7:34Coding error
- 9:07Putting everything together
- 10:18Implementation
- 10:56End to end test
- 11:36Conclusion
related talks
18mTinySDR: Low Power SDR Platform for Over the Air Programmable IoT Testbeds
16mWhisper: IoT in the TV White Space Spectrum
14mWi-Fi®: revolutionizing the IoT ecosystem
41mWireless protocols for the next generation IoT devices
53mComparing Messaging Techniques for the IoT
45mLoRa Edge™ Explored: A Deep Dive into Semtech’s LR1110 Solution
25mUpdate on 2.4Ghz LoRaWAN
17mmmComb: High-speed mmWave Commodity WiFi Backscatter