A High Data-Rate Energy-Efficient Triple-Channel UWB-Based Cognitive Radio

作者：Kim Nam Seog^*; Rabaey Jan M

来源：IEEE Journal of Solid-State Circuits, 2016, 51(4): 809-820.

DOI：10.1109/JSSC.2015.2512934

• CMOS
• cognitive radio (CR)
• energy efficiency
• high data rate
• quadrature analog correlation (QAC)
• RFIC
• spectrum shaping
• transceiver
• ultra wideband (UWB)
• wavelet spectrum sensing (SS)

This paper presents a fully integrated ultra wideband (UWB)-based cognitive radio (CR) transceiver for 1 Gb/s data-rate energy-efficient short-range wireless connectivity by scavenging triple discrete inactive frequency bands in 3.1-10.6 GHz ISM band. The transceiver including receivers (RXs), transmitters (TXs), spectrum sensors, and synthesizers is implemented in 1 V 65 nm standard CMOS technology. A novel pulse generator (PG) enables the TX to meet UWB emission mask and to reduce spectral sidelobe peak by <-40 dBc with low power consumption of 3.6 mW. A dual-mode RX front-end provides quadrature analog correlation (QAC) for analog domain matched filtering during communication and analog wavelet-based energy detection (ED) during spectrum sensing (SS) without changing circuitry. The transceiver achieves the minimum energy consumption of 59.7 pJ/b with 1.97 x 10(-4) bit error rate (BER) and the maximum energy consumption of 102.3 pJ/b with 1.25 x 10(-3) BER. Die area is 4.6 mm(2) with on-die phase-locked loops (PLLs) and pads.

• 出版日期2016-4