Systems and methods for wireless communication over a wide bandwidth channel using a plurality of sub-channels
First Claim
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1. A transmitter, comprisinga serial-to-parallel transmitter structured to transform a single serial bit stream comprising messages for a plurality of communication devices into a plurality of bit streams;
- a time division modulator structured to perform time division modulation on each of the plurality of bit streams;
a filter structured to apply a required pulse shaping to each of the plurality of bit streams;
a frequency shifter structured to shift each of the plurality of bit streams in frequency by a required amount; and
a summer structured to sum the plurality of bit streams into a single transmit signal;
wherein the time division modulator comprises, for each bit stream;
a sub-block repeater structured to take a sub-block of data from the bit stream and form a new sub-block comprising the original sub-block repeated two or more times;
a block terminator structured to add a termination prefix to the new sub-block; and
a sync inserter structured to periodically insert a synchronization code into the bit streams.
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Abstract
A method of communicating over a wideband communication channel divided into a plurality of sub-channels comprises dividing a single serial message intended for one of the plurality of communication devices into a plurality of parallel messages, encoding each of the plurality of parallel messages onto at least some of the plurality of sub-channels, and transmitting the encoded plurality of parallel messages to the communication device over the wideband communication channel.
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Citations
10 Claims
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1. A transmitter, comprising
a serial-to-parallel transmitter structured to transform a single serial bit stream comprising messages for a plurality of communication devices into a plurality of bit streams; -
a time division modulator structured to perform time division modulation on each of the plurality of bit streams; a filter structured to apply a required pulse shaping to each of the plurality of bit streams; a frequency shifter structured to shift each of the plurality of bit streams in frequency by a required amount; and a summer structured to sum the plurality of bit streams into a single transmit signal; wherein the time division modulator comprises, for each bit stream; a sub-block repeater structured to take a sub-block of data from the bit stream and form a new sub-block comprising the original sub-block repeated two or more times; a block terminator structured to add a termination prefix to the new sub-block; and a sync inserter structured to periodically insert a synchronization code into the bit streams. - View Dependent Claims (2, 3, 4, 5)
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6. A transmitter, comprising:
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a serial-to-parallel transformer structured to transform a single serial bit stream comprising messages for a plurality of communication devices into a plurality of bit streams; a frequency division modulator structured to perform frequency division modulation an each of the plurality of bit streams, a filter structured to apply a required pulse shaping to each of the plurality of bit streams; a frequency shifter structured to shift each of the plurality of bit streams in frequency by a required amount; and a summer structured to sum the plurality of bit streams into a single transmit signal; wherein the frequency division modulator comprises, for each bit stream; a sub-block repeater structured to take a sub-block of data from the bit stream and form a new sub-block comprising the original sub-block repeated twice; a block terminator structured to add a cyclic termination prefix to the new sub-block; and a sync inserter structured to periodically insert a synchronization code into the bit stream. - View Dependent Claims (7, 8, 9, 10)
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Specification