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Comparison of three methods for OFDM/OQAM channel
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Application background OFDM / OQAM based on filter bank multicarrier technology of Matlab procedures, and joined the multipath channel, simulation of several channel estimation, correct procedures, with a simulation diagram, can deepen the understanding of OQAM, and applies it to the simulation practice Key Technology OFDM offset quadrature amplitude modulation of the matlab program, and use the filter group multi carrier technology, faster than the speed of direct way, and by comparing the LS channel estimation, channel estimation IAM-R, IAM-NEW Third Plenary Session of the channel estimation, can see the bit error rate curve
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OQAM passband transmission, center frequency 30KHz
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Application background OFDM / OQAM based on filter bank multicarrier technology program by square root raised cosine pulse, and the polyphase decomposition, and the D / a conversion, frequency, center frequency of 30kHz, the program can be directly applied to the actual environment Key Technology OFDM realization method based on offset quadrature amplitude modulation, speed faster, the center frequency is 30kHz can see the spectrum of the transmitted signal near the center frequency, the receiver operating demodulation
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16QAM frequency modulation
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16QAM frequency modulation Raised cosine window shape, rolloff factor of 0.35, symbol rate 1MSybol/s, frequency in 21MHz Given levels of filter coefficients and time/frequency domain responses and time/frequency domain signal after the filter graph
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16QAM if modulation
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The raised cosine window of 16QAM if modulation is formed with roll off coefficient of 0.35, symbol rate of 1msybol / s and if frequency of 21mhz. The coefficients of all filters, time domain / frequency domain response and time domain / frequency domain diagram of signal passing through each filter are given
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