NARROWBAND TRANSMISSIONS USING A PLURALITY OF ANTENNAS
First Claim
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1. A method comprising:
- receiving an input data stream and generating one or more orthogonal frequency division multiple access (OFDMA) symbols, the one or more OFDMA symbols distributed across a plurality of physical resource units of a frequency band;
mapping a first set of the plurality of physical resource units to a first transmit chain of a wireless communication device, the first set defined by a first frequency partition, having a first range of contiguous frequencies, uniquely assigned to the first transmit chain;
mapping a second set of the plurality of physical resource units to a second transmit chain of the wireless communication device, the second set defined by a second frequency partition, having a second range of contiguous frequencies, uniquely assigned to the second transmit chain; and
transmitting the first and second sets by the first and second transmit chains, respectively.
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Abstract
Embodiments of the present disclosure describe orthogonal frequency division multiple access (OFDMA) transmissions using a plurality of antennas and/or transmit chains. Still other embodiments may be described and claimed.
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Citations
20 Claims
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1. A method comprising:
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receiving an input data stream and generating one or more orthogonal frequency division multiple access (OFDMA) symbols, the one or more OFDMA symbols distributed across a plurality of physical resource units of a frequency band; mapping a first set of the plurality of physical resource units to a first transmit chain of a wireless communication device, the first set defined by a first frequency partition, having a first range of contiguous frequencies, uniquely assigned to the first transmit chain; mapping a second set of the plurality of physical resource units to a second transmit chain of the wireless communication device, the second set defined by a second frequency partition, having a second range of contiguous frequencies, uniquely assigned to the second transmit chain; and transmitting the first and second sets by the first and second transmit chains, respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus comprising:
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a modulator configured to receive an input data stream and to generate one or more orthogonal frequency division multiple access (OFDMA) symbols that represent the input data stream; a mapper coupled to the modulator and configured to distribute a plurality of resource units, which are ordered in frequency over a frequency band and convey the one or more OFDMA symbols, among a plurality of transmit chains, such that each transmit chain receives resource units within a frequency partition of the frequency band that is uniquely assigned to the respective transmit chain; and the plurality of transmit chains coupled to the mapper and configured to receive the plurality of resource units and to transmit the plurality of resource units via an over-the-air link. - View Dependent Claims (9, 10, 11, 12)
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13. An apparatus comprising:
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a modulator configured to receive an input data stream and to generate a wideband transmission that represents the input data stream; a mapper coupled to the modulator and configured to receive the wideband transmission and to generate at least three narrowband transmissions, with each of the at least three narrowband transmissions corresponding to respective one of at least three adjacent and non-overlapping frequency ranges; and at least three antennas coupled to the mapper, each of the at least three antennas configured to receive a respective one of the plurality of narrowband transmissions and to transmit the received narrowband transmission to a receiving device via an over-the-air link. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification