PACKET TRANSMISSION METHOD AND APPARATUS FOR USE IN FILTER BANK-BASED MULTI-CARRIER WIRELESS COMMUNICATION
First Claim
1. A packet transmission method for use in a wireless communication system based on Filter Bank-based Multi-Carrier (FBMC), the method comprising:
- generating an Offset Quadrature Amplitude Modulation (OQAM) symbol by extracting a transmission data period from data blocks obtained by repeating a transmission data as many times as an overlapping factor;
performing Inverse Fast Fourier Transform (IFFT) on the OQAM symbol;
shifting, when the overlapping factor is an even number, the IFFT-ed symbol cyclically;
filtering the cyclically shifted symbol with a shortened compensation filter; and
transmitting the filtered symbol in an overlapped OQAM signal.
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Accused Products
Abstract
The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE).
A packet transmission method and apparatus for use in a wireless communication system and, in particular, for transmitting packets in a filter bank-based multicarrier wireless communication system. The packet transmission method for use in a wireless communication system based on Filter Bank-based Multi-Carrier (FBMC) includes generating an Offset Quadrature Amplitude Modulation (OQAM) symbol by extracting a transmission data period from data blocks obtained by repeating a transmission data as many times as an overlapping factor, performing Inverse Fast Fourier Transform (IFFT) on the OQAM symbol, shifting, when the overlapping factor is an even number, the IFFT-ed symbol cyclically, filtering the cyclically shifted symbol with a shortened compensation filter, and transmitting the filtered symbol in an overlapped OQAM signal.
8 Citations
17 Claims
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1. A packet transmission method for use in a wireless communication system based on Filter Bank-based Multi-Carrier (FBMC), the method comprising:
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generating an Offset Quadrature Amplitude Modulation (OQAM) symbol by extracting a transmission data period from data blocks obtained by repeating a transmission data as many times as an overlapping factor; performing Inverse Fast Fourier Transform (IFFT) on the OQAM symbol; shifting, when the overlapping factor is an even number, the IFFT-ed symbol cyclically; filtering the cyclically shifted symbol with a shortened compensation filter; and transmitting the filtered symbol in an overlapped OQAM signal. - View Dependent Claims (2, 3, 4, 5)
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6. A packet transmission apparatus for use in a wireless communication system based on Filter Bank-based Multi-Carrier (FBMC), the apparatus comprising:
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a symbol generator configured to extract a transmission data period from data blocks obtained by repeating a transmission data as many times as an overlapping factor and outputs an Offset Quadrature Amplitude Modulation (OQAM) symbol using the extracted transmission data period; an Inverse Fast Fourier Transform (IFFT) processor configured to perform IFFT on the OQAM symbol; a transmission filter unit configured to filter the IFFT-ed symbol with a shortened compensation filter; an OQAM overlapping unit configured to overlap the filtered symbol in an overlapped OQAM signal; a switch configured to switch an output of the IFFT processor to a cyclic shift processor or the transmission filter unit; and a transmission controller configured to control the switch based on a size of the transmission data and the overlapping factor. - View Dependent Claims (7, 8, 9, 10)
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11. A packet reception method for use in a wireless communication system based on Filter Bank-based Multi-Carrier (FBMC), the method comprising:
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outputting a base band signal by processing a symbol with an FBMC length; filtering the baseband signal with a prototype filter used in the FBMC system; shifting, when an overlapping factor of the FBMC system is an even number, the filtered data cyclically; performing M-point Fast Fourier Transform (FFT) on the cyclically shifted data; equalizing the FFT-ed data; and demodulating the equalized data. - View Dependent Claims (12, 13, 14)
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15. A packet reception apparatus for use in a wireless communication system based on Filter Bank-based Multi-Carrier (FBMC), the apparatus comprising:
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a signal reception unit configured to output a base band signal by processing a symbol with an FBMC length; a reception filter unit configured to filter the baseband signal with a prototype filter used in the FBMC system; a cyclic shift processor configured to shift the filtered data cyclically; a Fast Fourier Transform (FFT) processor configured to perform M-point FFT on the cyclically shifted data; an equalizer configured to equalize the FFT-ed data; a demodulator configured to demodulate the equalized data; a switch configured to switch an output of the reception filter to the cyclic shift processor or the FFT processor; and a reception controller configured to control, when data bursts are received and the overlapping factor of the FBMC system is an even number, the switch to switch the output of the reception filter to the cyclic shift processor. - View Dependent Claims (16, 17)
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Specification