| 摘要 |
A high speed wireless data transfer system (10) for use in an indoor environment having a floor, a ceiling and at least one wall from which unwanted multipath signals are generated by reflection of the transmitted data signals. The system includes a data source (18) for generating a data signal, a transmitter stage (14) connected to the data source and having a transmitter antenna (16) with a predetermined beamwidth positioned within the indoor environment for transmitting the data signal at a selected carrier frequency, and a receiver stage (22) having a receiver antenna (26) with a predetermined beamwidth positioned within the indoor environment for receiving the data signal transmitted at the selected carrier frequency. The receiver antenna is a directional antenna having a beamwidth selected to be sufficiently narrow, and preferably in the range of approximately 5.degree. to 15.degree., as to avoid the reception of substantially all multipath signals so that the received data signal is substantially error free.
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