Switched transmit antennas with no feedback for multipath reduction
First Claim
1. A communication system for reducing multipath comprising:
- a transmitter;
a switch coupled to the transmitter;
at least two antennas, coupled to the switch, for switching a transmit signal to one of the antennas, wherein the transmit signal is received by at least one receiver through a receive antenna; and
wherein the switch switches the transmit signal with no explicit and no implicit feedback associated with the at least one receiver.
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Abstract
A communication system is provided comprising a transmitter coupled to a switch, which is further coupled to at least two antennas for switching the transmit signal to one of the antennas, with no feedback. The communication system further comprises at least one receiver for receiving the transmitted signal.
The communication system in the present invention is able to help mitigate the effects of multipath. Previous attempts to mitigate the effects of multipath suffer from various problems: increased complexity needed to measure channel parameters and a feedback loop to switch the transmit antenna based on the parameters.
The system is particularly useful when deployed in a MAS system or a jamming system.
68 Citations
20 Claims
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1. A communication system for reducing multipath comprising:
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a transmitter; a switch coupled to the transmitter; at least two antennas, coupled to the switch, for switching a transmit signal to one of the antennas, wherein the transmit signal is received by at least one receiver through a receive antenna; and wherein the switch switches the transmit signal with no explicit and no implicit feedback associated with the at least one receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A communication system for reducing multipath comprising:
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a first transmitter; a switch, coupled to the first transmitter; at least two antennas, coupled to the switch, wherein the switch switches a first transmit signal to one of the antennas; a first receiver, associated with the first transmitter; and a first receive antenna coupled to the first receiver for receiving an ambient signal environment; wherein the first transmit signal is received by at least one secondary receiver, through a secondary receive antenna, and the secondary receiver is associated with at least one respective secondary transmitter, coupled to a secondary transmit antenna; and wherein the switch switches the first transmit signal with no explicit and no implicit feedback associated with the at least one secondary receiver. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification