Systems and methods related to time-division and frequency-division duplex protocols for wireless applications. In some embodiments, a wireless architecture can include a radio-frequency (RF) path configured to support a first modified time-division duplex (TDD) band operation and a second modified TDD band operation. Such a wireless architecture can allow consolidation of signal paths and/or re-use of components such as filters and duplexers, to advantageously reduce or eliminate some paths and/or components.