Ultra-wideband (UWB) wireless communication systems are based on the transmission of extremely narrow pulses. with a duration inferior to a nanosecond. The application of transmit reference (TR) to UWB systems allows to side-step channel estimation at the receiver. with a tradeoff of the effective transmission bandwidth. https://www.roneverhart.com/10-Pack-Economy-Plastic-Round-Charger-Plates-12-in-Lavender-Lilac-with-Wide-Gold-Rim-Decorative-Dinner-Party-Serving-/