Performance of equalization techniques in a radio interference environment

The performance of equalization techniques for digital radio systems in the presence of sinusoidal and modulated interference signals is investigated. Linear and nonlinear equalizers as well as synchronous and T/2-spaced structures are considered. It is shown that synchronous decision-feedback equalizers are powerful countermeasure devices for radio channels affected by both selective fading and sinusoidal interferers. It is also demonstrated that T/2-spaced linear and nonlinear equalizers can significantly improve the adjacent channel interference margin, especially in the case of multicarrier interleaved frequency arrangements