초록 ▼

The high quality PCS communications are enabled in environments where adjacent 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), frequenc

The high quality PCS communications are enabled in environments where adjacent 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), frequency 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 demand by assigning additional TDMA slots during the user's session.

대표청구항 ▼

[ What is claimed is:] [1.] A highly bandwidth-efficient communications method, comprising the steps of:receiving at the base station a first incoming wireless signal comprising a plurality of first discrete frequency tones that are orthogonal frequency division multiplexed (OFDM) in a first frequen

[ What is claimed is:] [1.] A highly bandwidth-efficient communications method, comprising the steps of:receiving at the base station a first incoming wireless signal comprising a plurality of first discrete frequency tones that are orthogonal frequency division multiplexed (OFDM) in a first frequency band from a first remote station during a first time division multiple access (TDMA) interval;receiving at the base station a second incoming wireless signal comprising a plurality of second discrete frequency tones that are orthogonal frequency division multiplexed (OFDM) in said first frequency band from a second remote station during said first time division multiple access (TDMA) interval;receiving at the base station a third incoming wireless signal comprising a plurality of said first discrete frequency tones that are orthogonal frequency division multiplexed (OFDM) in said first frequency band from a third remote station during a second time division multiple access (TDMA) interval;receiving at the base station a fourth incoming wireless signal comprising a plurality of said second discrete frequency tones that are orthogonal frequency division multiplexed (OFDM) in said first frequency band from a fourth remote station during said second time division multiple access (TDMA) interval;transmitting at the base station said first outgoing wireless signal comprising a plurality of third discrete frequency tones that are orthogonal frequency division multiplexed (OFDM) in a second frequency band to said first remote station during a third time division multiple access (TDMA) interval;transmitting at the base station said second outgoing wireless signal comprising a plurality of fourth discrete frequency tones that are orthogonal frequency division multiplexed (OFDM) in said second frequency band to said second remote station during said third time division multiple access (TDMA) interval;transmitting at the base station said third outgoing wireless signal comprising said plurality of said third discrete frequency tones that are orthogonal frequency division multiplexed (OFDM) in said second frequency band to said third remote station during a fourth time division multiple access (TDMA) interval; andtransmitting at the base station said fourth outgoing wireless signal comprising said plurality of said fourth discrete frequency tones that are orthogonal frequency division multiplexed (OFDM) in said second frequency band to said fourth remote station during said fourth time division multiple access (TDMA) interval.