MB-OFDM system and method for frame boundary detection
AssigneeSamsung Electronics Co., Ltd.
InventorYun-Young Kim
Life of this patent
Estimating the term…
Abstract
A method of detecting a frame boundary for a multi-band orthogonal frequency division multiplexing mode is comprised of: calculating an autocorrelation value of a reception signal; estimating an error of the autocorrelation value; and detecting a frame boundary with reference to the error, a sign of the autocorrelation value, and a sign of an autocorrelation value of a previous reception signal. The method is able to substantially exactly detect the frame boundary even when the frequency error rate of all band groups of the UWB spectrums defined by the WiMedia PHY specification is conditioned over ±70 ppm.
Claims21
A method of detecting a frame boundary for a multi-band orthogonal frequency division multiplexing mode, the method comprising:
- calculating an autocorrelation value of a reception signal;
- estimating an error of the autocorrelation value;
- and
- detecting a frame boundary with reference to the error, a sign of the autocorrelation value, and a sign of an autocorrelation value of a previous reception signal.
A multi-band orthogonal frequency division multiplexing system comprising:
- an autocorrelator configured to receive a current reception signal and to output an autocorrelation value;
- and
- a detection circuit configured to estimate an error of the autocorrelation value and to detect a frame boundary with reference to the error, a sign of the autocorrelation value, and a sign of an autocorrelation value of a previous reception signal.
A method of detecting a frame boundary for a multi-band orthogonal frequency division multiplexing mode, the method comprising:
- calculating an autocorrelation value of a reception signal;
- estimating an error of the autocorrelation value, including determining whether the autocorrelation value is included in a first error range of a second error range, including:
- determining the autocorrelation value to be in the first error range if a real part of the autocorrelation value is negative and an absolute value of the real part of the autocorrelation value is larger than an absolute value of an imaginary part of the autocorrelation value;
- else
- determining the autocorrelation value to be in the second error range if the autocorrelation value is not in the first error range;
- and
- detecting a frame boundary with reference to the error, a sign of the autocorrelation value, and a sign of an autocorrelation value of a previous reception signal.
Dependencies are inferred from the claim text.