Multiple-input multiple-output (MIMO) communication system
First Claim
Patent Images
1. A multiple-input multiple-output (MIMO) signal processor comprising:
- an input configured to receive an input signal desired for transmission, the input signal being non-diverse;
a multiplexer configured to multiplex the input signal into at least a first signal part, a second signal part, a third signal part and a fourth signal part;
a transmitter configured to transmit the first signal part at a first frequency, the second signal part at a second frequency, the third signal part at a third frequency and the fourth signal part at a fourth frequency, each of the first, second, third and fourth frequencies being diverse; and
wherein the multiplexer is configured to add parity information to each of the first, second, third and fourth signal parts prior to combining the first, second, third and fourth signal parts for transmission over a non-optical, wireline communication medium.
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Abstract
A multiple-input multiple-output (MIMO) capable system is contemplated. The communication system may include a signal processor configured to separate an input stream into multiple signal paths to facilitate simultaneous transport through a communication medium. The capability to simultaneously transmit multiples signal paths may be beneficial in order to maximize throughput and/or minimize expense.
48 Citations
17 Claims
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1. A multiple-input multiple-output (MIMO) signal processor comprising:
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an input configured to receive an input signal desired for transmission, the input signal being non-diverse; a multiplexer configured to multiplex the input signal into at least a first signal part, a second signal part, a third signal part and a fourth signal part; a transmitter configured to transmit the first signal part at a first frequency, the second signal part at a second frequency, the third signal part at a third frequency and the fourth signal part at a fourth frequency, each of the first, second, third and fourth frequencies being diverse; and wherein the multiplexer is configured to add parity information to each of the first, second, third and fourth signal parts prior to combining the first, second, third and fourth signal parts for transmission over a non-optical, wireline communication medium.
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2. A multiple-input multiple-output (MIMO) communication system comprising:
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a signal processor configured to; i) receive an input signal desired for transmission, the input signal being non-diverse; ii) multiplex the input signal into at least a first signal part, a second signal part, a third signal part and a fourth signal part; iii) transmit the first signal part at a first frequency, the second signal part at a second frequency, the third signal part at a third frequency and the fourth signal part at a fourth frequency, each of the first, second, third and fourth frequencies being diverse; and an end station configured to; i) receive the first, second, third and fourth signal parts after being transmitted over a non-optical communication medium; and ii) correlate the received first, second, third and fourth signal parts for spatially diverse radio frequency (RF) transmission. - View Dependent Claims (3, 4)
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5. A multiple-input multiple-output (MIMO) communication system comprising:
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a signal processor configured to; i) receive an input signal desired for transmission, the input signal being non-diverse; ii) multiplex the input signal into at least a first signal part, a second signal part, a third signal part and a fourth signal part; iii) transmit the first signal part at a first frequency, the second signal part at a second frequency, the third signal part at a third frequency and the fourth signal part at a fourth frequency, each of the first, second, third and fourth frequencies being diverse iv) combine the first, second, third and fourth signal parts for transmission over at least one of a wireline communication medium and an optical communication medium; and an end station configured to; i) receive the first, second, third and fourth signal parts after being transmitted over the at least one of the wireline communication medium and the optical communication medium; ii) correlate the first, second, third and fourth signal parts for spatially diverse radio frequency (RF) transmission, the spatially diverse RF transmission being characterized by the first, second, third and fourth signal parts being correlated such that each signal part is transmitted at a common frequency; and iii) select the common frequency from a plurality of available frequencies, the plurality of available frequencies being selected according to an originator of the input signal such that the common frequency is selected from at least one of the available frequencies associated with the originator.
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6. A multiple-input multiple-output (MIMO) signal processor comprising:
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an input configured to receive an input signal desired for transmission, the input signal being non-diverse; a multiplexer configured to multiplex the input signal into at least a first signal part, a second signal part, a third signal part and a fourth signal part; a transmitter configured to transmit the first signal part at a first frequency, the second signal part at a second frequency, the third signal part at a third frequency and the fourth signal part at a fourth frequency, each of the first, second, third and fourth frequencies being diverse; a combiner configured to combine the first, second, third and fourth signal parts for transmission over at least one of a wireline communication medium and an optical communication medium; and a delay configured to delay at least one of the first signal part, the second signal part, the third signal part and the fourth signal part prior to transmission over at least one of the wireline communication medium and the optical communication medium.
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7. A multiple-input multiple-output (MIMO) communication system comprising:
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a signal processor configured to; i) receive an input signal desired for transmission, the input signal being non-diverse; ii) multiplex the input signal into at least a first signal part, a second signal part, a third signal part and a fourth signal part; iii) transmit the first signal part at a first frequency, the second signal part at a second frequency, the third signal part at a third frequency and the fourth signal part at a fourth frequency, each of the first, second, third and fourth frequencies being diverse; and an end station configured to; receive the first, second, third and fourth signal parts after being transmitted over a non-optical, wireline communication medium, each of the first, second, third and fourth signal parts corresponding with distinct portions of the input signal; and process the first, second, third and fourth signal parts into an output signal representative of the input signal, the output signal being spatially and frequency non-diverse.
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8. A method of facilitating signal transmissions comprising:
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receiving an input signal desired for transmission; multiplexing the input signal into at least a plurality of signal parts; modulation mapping each of the plurality of signal parts after the multiplexing; orthogonal frequency division multiplexing (OFDM) processing each of the plurality of signal parts after the modulation mapping; transmitting each of the plurality of signal parts for long-haul transmission over at least one of a wireline communication medium and an optical communication medium after the OFDM processing, including transmitting each of the plurality of signal parts at a different center frequency; and wherein the multiplexing includes adding parity information to each of the plurality of signal parts and the OFDM processing includes relating each of the plurality of signal parts to actual spectrum. - View Dependent Claims (9, 10)
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11. A method of facilitating signal transmissions comprising:
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receiving an input signal desired for transmission; multiplexing the input signal into at least a plurality of signal parts; modulation mapping each of the plurality of signal parts after the multiplexing; orthogonal frequency division multiplexing (OFDM) processing each of the plurality of signal parts after the modulation mapping; transmitting each of the plurality of signal parts for long-haul transmission over at least one of a wireline communication medium and an optical communication medium after the OFDM processing, including transmitting each of the plurality of signal parts at a different center frequency; and spatially multiplexing each of the plurality of signal parts after the modulation mapping and before the OFDM processing, the spatially multiplexing including delaying at least one of the plurality of signal parts relative to another one of the plurality of signal parts.
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12. A method of facilitating signal transmissions comprising:
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receiving an input signal desired for transmission; multiplexing the input signal into at least a plurality of signal parts; modulation mapping each of the plurality of signal parts after the multiplexing; orthogonal frequency division multiplexing (OFDM) processing each of the plurality of signal parts after the modulation mapping; transmitting each of the plurality of signal parts for long-haul transmission over at least one of a wireline communication medium and an optical communication medium after the OFDM processing, including transmitting each of the plurality of signal parts at a different center frequency; receiving each of the plurality of signal parts after being transmitted over the wireline communication medium in a spatially non-diverse manner; correlating each of the plurality of signal parts after being transmitted over the wireline communication medium for spatially diverse radio frequency (RF) transmission at a common frequency; and processing the RF transmission to generate an output signal approximating the input signal, the output signal being frequency non-diverse and including each of the plurality of signal parts.
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13. A method of facilitating a cellular phone call between an originating device and a destination device, the method comprising:
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receiving an input signal representative of at least part of the cellular phone call; multiplexing the input signal into at least a plurality of signal parts; transmitting each of the plurality of signal parts for long-haul transmission over at least one of a wireline communication medium and a fiber optic communication medium, including transmitting each of the plurality of signal parts at a different center frequency; receiving each of the plurality of signal parts after being transmitted over the at least one of the wireline communication medium and the fiber optic communication medium; correlating each of the plurality of signal parts for spatially diverse radio frequency (RF) transmission to the destination device, including transmitting each of the plurality of signal parts at a common frequency; identifying a service provider associated with the destination device; and selecting the common frequency based on the identity of the service provider.
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14. A multiple-input multiple-output (MIMO) communication signal processor comprising:
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an input configured to receive an input signal desired for transmission, the input signal being non-diverse; a multiplexer configured to multiplex the input signal into at least a first signal part, a second signal part, a third signal part and a fourth signal part; a transmitter configured to transmit the first signal part at a first frequency, the second signal part at a second frequency, the third signal part at a third frequency and the fourth signal part at a fourth frequency, each of the first, second, third and fourth frequencies being diverse; wherein the input signal is spatially non-diverse and frequency non-diverse; wherein the first, second, third and fourth parts are multiplexed to each include a different portion of the input signal; and wherein the first, second, third and fourth parts are transmitted in a non-spatially diverse manner to a coaxial cable medium for transport to an end station. - View Dependent Claims (15)
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16. A method of facilitating signal transmissions comprising:
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receiving an input signal desired for transmission; multiplexing the input signal into at least a plurality of signal parts; modulation mapping each of the plurality of signal parts after the multiplexing; orthogonal frequency division multiplexing (OFDM) processing each of the plurality of signal parts after the modulation mapping; transmitting each of the plurality of signal parts for long-haul transmission over at least one of a wireline communication medium and an optical communication medium after the OFDM processing, including transmitting each of the plurality of signal parts at a different center frequency; and transmitting each of the plurality of signal parts for long-haul transmission over the wireline communication medium, including transmitting each of the plurality of signal parts without spatial diversity and such that each of the plurality of signal parts includes a different portion of the input signal.
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17. A method of facilitating a cellular phone call between an originating device and a destination device, the method comprising:
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receiving an input signal representative of at least part of the cellular phone call; multiplexing the input signal into at least a plurality of signal parts, wherein each signal part includes a different portion of the input signal; transmitting each of the plurality of signal parts for long-haul transmission over at least one of a wireline communication medium and a fiber optic communication medium without spatial diversity, including transmitting each of the plurality of signal parts at a different center frequency; receiving each of the plurality of signal parts after being transmitted over the at least one of the wireline communication medium and the fiber optic communication medium; correlating each of the plurality of signal parts for spatially diverse radio frequency (RF) transmission to the destination device, including transmitting each of the plurality of signal parts at a common frequency.
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Specification