Wi-Fi connectivity significantly affects power efficiency in smart embedded systems. These systems often rely on battery power, so efficient energy usage is critical. Wi-Fi modules consume substantial power during data transmission and reception, as they keep the system active and engaged in network communication. Idle power consumption is another factor; even when not actively sending data, Wi-Fi modules require energy to maintain a connection, especially in applications requiring constant updates, such as smart home devices or IoT sensors.

Advanced techniques, such as duty cycling, help reduce Wi-Fi power drain by allowing the module to sleep or enter low-power modes when data transmission isn't necessary. Additionally, efficient communication protocols, like MQTT or CoAP, can optimize data handling by reducing the frequency and size of data packets, lowering the Wi-Fi module’s workload.

The integration of Wi-Fi 6, which is designed for IoT applications, also brings power-saving features like Target Wake Time (TWT). This feature allows devices to communicate only at scheduled intervals, minimizing idle power use. These strategies are essential for developing energy-efficient, connected devices in the embedded field. For those interested, Embedded Systems training in Noida can provide further knowledge on optimizing Wi-Fi in smart systems.