Patent
Space diversity system switching transmission
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TLDR
In this paper, a fixed radio equipment serving as a base station includes a transmitter, a plurality of antennas, and a selective control circuit, where the antennas are spaced apart from each other by a distance which minimizes a correlation of interferential fading.Abstract:
Fixed radio equipment serving as a base station includes a transmitter, a plurality of antennas, and a selective control circuit. The antennas are spaced apart from each other by a distance which minimizes a correlation of interferential fading. The transmitter modulates a carrier by identical signals to be transmitted during periods associated in number with the antennas and feeds the resulting bursts of the carrier time-serially to a selective control circuit. The selective control circuit delivers one of the successive bursts of the carrier fed from the transmitter to one of the antennas and then delivers another burst following the above-mentioned burst to another one of the antennas. Mobile radio equipment or station has a single antenna for receiving the identical signals transmitted time-serially from the base station. The mobile station selects and outputs either one of the received signals which has higher quality than the other.read more
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References
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Patent
Time division adaptive retransmission technique for portable radio telephones
TL;DR: In this paper, a portable transceiver and a remote terminal station each using at least two antennas with different polarization transmission capabilities for an adaptive retransmission technique was proposed, where the transceiver receives each of the preamble transmissions from the terminal station via a separate one of differently oriented antennas and determines which antenna received the strongest signal.
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TL;DR: In this article, a two-receiver system incorporating first and second receivers is proposed, where a wave envelope detector is provided for each receiver to generate an output voltage corresponding to the strength of the electromagnetic signal wave which is picked up by the receiver.
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TL;DR: At present time digital communication systems are widely used throughout in the world and in their modern life the authors deal with cellular phones, DECT indoor phones, paging system, office scrambling communication system, military and police communications.
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High capacity digital mobile radio system
Bernard Glance,Paul S. Henry +1 more
TL;DR: In this article, a mobile radio base station with a plurality of retransmission branches is proposed to communicate with a large number of mobile stations by implementing space diversity and time division retransmissions techniques in a digital communication system.
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TL;DR: In this article, the authors describe a system for communication between a transmitting station and a receiving station by way of a message which consists of a direct succession of a number of identical code words.