Wireless polar receiver using two injection-locked oscillator stages for green radios

Cognitive Polar Receiver Using Two Injection-Locked Oscillator Stages

“…The elimination of PLL-based carrier recovery makes the proposed receiver energy efficient, and thus has great potential for short-range wireless communications. This paper substantially expands the earlier one [7] in two respects. First, it develops in detail the theory of the cognitive polar receiver.…”

“…This paper proposes a cognitive polar receiver that uses two ILO stages. Our previous paper [7] provided brief theoretical discussions on the proposed architecture and preliminary experimental results. The first ILO stage in the proposed architecture is for separating the envelope signal and the phase-modulated carrier from an input nonconstant envelope modulation signal, while the second ILO stage performs noncoherent demodulation of the phase-modulated carrier.…”