An Approach for Compensating Reciprocal Mixing and Close-In Phase Noise Distortion

Local oscillator phase noise is one of the primary factors that limits the achievable performance in modern communication receivers. There are two mechanisms by which the phase noise degrades the desired signal — the close-in and reciprocal mixing distortion. Although an extensive body of literature exists in compensating for close-in phase noise distortion, there is very little work on compensating for the effects of reciprocal mixing with no practical solution to date. This paper presents an approach to jointly and seamlessly compensate for both the close-in and reciprocal mixing phase noise distortion. A prototype receiver using commercial off-the-shelf components has been built and a 9.4 dB SINR improvement demonstrated.