METHOD FOR FREQUENCY DIVISION DUPLEX COMMUNICATIONS

摘要

The high quality PCS communications are enabled in environments where adjace nt PCS service bands operate with out-of-band harmonics that would otherwise interfere with the system's operation. The highly bandwidth-efficient communications method combines a form of time division duplex (TDD), frequen cy division duplex (FDD), time division multiple access (TDMA), orthogonal frequency division multiplexing (OFDM), spatial diversity, and polarization diversity in various unique combinations. The method provides excellent fade resistance. The method enables changing a user's available bandwidth on dema nd by assigning additional TDMA slots during the user's session.