Method and apparatus for data transmission using multiple transmit antennas
First Claim
Patent Images
1. A method comprising:
- converting each group of successive groups of k incoming bits into a first sequence of symbols and a second sequence of symbols;
modulating a carrier using the first sequence of symbols to generate a first modulated signal;
transmitting the first modulated signal from a first transmitting antenna; and
transmitting a second modulated signal from a second transmitting antenna, wherein the second modulated signal is generated using the second sequence of symbols, and wherein the first transmitting antenna differs from the second transmitting antenna.
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Abstract
A method and apparatus for increasing the data rate and providing antenna diversity using multiple transmit antennas utilize a set of bits of a digital signal to generate a codeword. Delay elements may be provided in antenna output channels, or, with suitable code construction, delay may be omitted. n signals represent n symbols of a codeword are transmitted with n different transmit antennas. At the receiver, the noisy received sequence is decoded. The parallel transmission and channel coding enables an increase the data rate over previous techniques, and recovery even under fading conditions. The channel coding may be concatenated with error correction codes under appropriate conditions.
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Citations
12 Claims
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1. A method comprising:
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converting each group of successive groups of k incoming bits into a first sequence of symbols and a second sequence of symbols; modulating a carrier using the first sequence of symbols to generate a first modulated signal; transmitting the first modulated signal from a first transmitting antenna; and transmitting a second modulated signal from a second transmitting antenna, wherein the second modulated signal is generated using the second sequence of symbols, and wherein the first transmitting antenna differs from the second transmitting antenna. - View Dependent Claims (2, 3, 4)
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5. A system comprising:
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a processor; and a computer-readable storage device storing instructions which, when executed by the processor, cause the processor to perform operations comprising; converting each group of successive groups of k incoming bits into a first sequence of symbols and a second sequence of symbols; modulating a carrier using the first sequence of symbols to generate a first modulated signal; and transmitting the first modulated signal from a first transmitting antenna and a second modulated signal from a second transmitting antenna, wherein the second modulated signal is generated using the second sequence of symbols, and wherein the first transmitting antenna differs from the second transmitting antenna. - View Dependent Claims (6, 7, 8)
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9. A computer-readable storage device having instructions stored which, when executed by a computing device, cause the computing device to perform operations comprising:
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converting each group of successive groups of k incoming bits into a first sequence of symbols and a second sequence of symbols; modulating a carrier using the first sequence of symbols to generate a first modulated signal; and transmitting the first modulated signal from a first transmitting antenna and a second modulated signal from a second transmitting antenna, wherein the second modulated signal is generated using the second sequence of symbols, and wherein the first transmitting antenna differs from the second transmitting antenna. - View Dependent Claims (10, 11, 12)
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Specification