Excursion compensation in multipath communication systems with a cyclic prefix
First Claim
Patent Images
1. A method comprising:
- receiving a communication signal;
splitting the communication signal into a first communication signal and a second communication signal;
zero padding the second communication signal; and
excursion compensating the first communication signal with the second communication signal to generate an excursion compensated signal, wherein the excursion compensating is performed by fast Fourier transform logic;
wherein;
the received communication signal comprises at least one cyclic prefix;
the zero padding of the second communication signal is dependent on the length of said at least one cyclic prefix;
the method is performed in an excursion compensation unit;
at least one cyclic prefix unit generates said at least one cyclic prefix prior to said receiving the communication signal; and
the excursion compensation unit receives information on the length of said at least one cyclic prefix from said at least one cyclic prefix unit.
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Abstract
Methods, apparatuses, and systems that receive a communication signal. The communication signal may be split into a first communication signal and a second communication signal. The first communication signal may be zero padded. The zero padded first communication signal may be excursion compensated to generate an excursion compensated signal. The excursion compensating may be performed by fast Fourier transform logic. Zero padding may allow for efficient fast Fourier transform process by ensuring that the length of data frames processed is an integer power of two.
207 Citations
48 Claims
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1. A method comprising:
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receiving a communication signal; splitting the communication signal into a first communication signal and a second communication signal; zero padding the second communication signal; and excursion compensating the first communication signal with the second communication signal to generate an excursion compensated signal, wherein the excursion compensating is performed by fast Fourier transform logic; wherein; the received communication signal comprises at least one cyclic prefix; the zero padding of the second communication signal is dependent on the length of said at least one cyclic prefix; the method is performed in an excursion compensation unit; at least one cyclic prefix unit generates said at least one cyclic prefix prior to said receiving the communication signal; and the excursion compensation unit receives information on the length of said at least one cyclic prefix from said at least one cyclic prefix unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method comprising:
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receiving an orthogonal frequency division multiplexed (OFDM) communication signal; splitting the communication signal into a first communication signal and a second communication signal; interpolating the second communication signal; and excursion compensating the first communication signal with the second signal to generate an excursion compensated signal, wherein; the received communication signal comprises at least one cyclic prefix; the interpolating converts a first number of samples in each data frame of the second communication signal into a second number of samples, wherein the second number of samples is an integer power of two; the interpolating of the second communication signal is dependent on the length of said at least one cyclic prefix; the method is performed in an excursion compensation unit; at least one cyclic prefix unit generates said at least one cyclic prefix prior to said receiving the electrical data signal; and the excursion compensation unit receives information on the length of said at least one cyclic prefix from said at least one cyclic prefix unit. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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Specification