Dual mode satellite/cellular terminal
First Claim
1. A dual mode transceiver comprising:
- a linear modulation receiver adapted to receive linearly modulated TDMA signals from a first remote station over a first TDMA downlink channel having a given bandwidth, said linear modulation receiver being operative to receive constant envelope modulated TDMA signals from a second remote station over a second TDMA downlink channel having the same given channel bandwidth, wherein the constant envelope TDMA signals are an approximation of said linearly modulated TDMA signals, and wherein the first and second TDMA downlink channels have time slots of equal duration and include the same number of bits; and
a transmitter that transmits constant envelope modulated TDMA signals over an uplink channel to said first and second remote stations.
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Accused Products
Abstract
A method and apparatus of communicating information using Time Division Multiple Access and adaptive transmission and reception are disclosed. Signal bursts are transmitted from TDMA transmitters to a TDMA receiver wherein the transmitter codes the information and transmits coded information to the receiver using at least one of two timeslots of a plurality of timeslots in a repetitive TDMA frame period. Both of the two timeslots are received whether or not the transmitter has transmitted using one or two timeslots and the received signals are classified as intended and non-intended. Successively received signals classified as intended are then assembled into a block for decoding to reproduce the information.
144 Citations
14 Claims
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1. A dual mode transceiver comprising:
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a linear modulation receiver adapted to receive linearly modulated TDMA signals from a first remote station over a first TDMA downlink channel having a given bandwidth, said linear modulation receiver being operative to receive constant envelope modulated TDMA signals from a second remote station over a second TDMA downlink channel having the same given channel bandwidth, wherein the constant envelope TDMA signals are an approximation of said linearly modulated TDMA signals, and wherein the first and second TDMA downlink channels have time slots of equal duration and include the same number of bits; and a transmitter that transmits constant envelope modulated TDMA signals over an uplink channel to said first and second remote stations. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of transmitting and receiving signals at a dual mode transceiver:
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receiving linearly modulated TDMA signals from a first remote station over a first TDMA downlink channel having a given bandwidth with a linear modulation receiver configured to receive linearly modulated TDMA signals; receiving constant envelope modulated TDMA signals form a second remote station over a second TDMA downlink channel having the same given bandwidth with said linear modulation receiver, wherein the constant envelope TDMA signals are an approximation of said linearly modulated TDMA signals, and wherein the first and second TDMA downlink channels have time slots of equal duration and include the same number of bits; and transmitting constant envelope modulated TDMA signals to the first and second remote stations. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification