Abstract: CDMA (Code Division Multiple Access) communications systems and methods for performing a single to multiple frequency band conversion for mobile communications. The systems and methods include mixing a portion of a first CDMA signal in a first frequency band with a reference signal to convert a portion of the first CDMA signal to a second frequency band. The converted portion and the other portion of the first frequency band can then be transmitted. The systems and methods further include filtering a portion of a second CDMA signal having frequency components in multiple frequency bands to provide a filtered CDMA signal in the first frequency band. The filtered CDMA signal is then mixed to convert it to the second frequency band for receiver processing.

Abstract: A method and system for providing a digital wireless local loop for use by a wireless transceiver, e.g., a portable handset, in an indoor environment utilizing an outdoor base transceiver. Upon determining that the portable handset is located in an outdoor environment, the base transceiver and the portable handset communicate over one of a first plurality of frequencies. The outdoor portable handset is prohibited from transmitting and receiving signals over frequencies other than the first plurality of frequencies. Upon determining that the portable handset is located in an indoor environment, the base transceiver first transmits the communication signal to a first converter at one of a second plurality of frequencies different from the first plurality of frequencies. The first converter then converts the frequency to a predetermined conversion frequency different from the first and second plurality of frequencies.