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Cooperation within NEWCOM WPR3

Cooperation within NEWCOM WPR3. POLITO-CHALMERS. Polito:Daniel Bustos Chalmers: Ali Behravan, Thomas Eriksson. Implementation of a communication link simulator with possibilities to simulate all kinds of communication signals using nonlinear amplifier models.

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Cooperation within NEWCOM WPR3

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  1. Cooperation within NEWCOM WPR3

  2. POLITO-CHALMERS Polito:Daniel Bustos Chalmers: Ali Behravan, Thomas Eriksson • Implementation of a communication link simulator with possibilities to simulate all kinds of communication signals using nonlinear amplifier models. • Using the link simulator, we have made a comparison of various types of black-box amplifier models. This has resulted in a submitted conference paper. Memoryless model Quasi-memoryless model Memory model 4.9 % 3.9 % 2.7%

  3. % TOTAL_BITS: The total number of bits you want to simulate (information bits) TOTAL_BITS=1000000 % SNR: the SNR values (Eb over N0, in dB) that you wish to simulate % Either specify a single snr value (SNR=value) or a range (SNR=start:step:end) SNR=28:1:30 % FILENAME: Name of the file where results are stored FILENAME=so_10.it % CODE_TYPE can be NONE, MFD (maximum free distance) or ODS (optimum distance spectrum). % CODE_INVERSE_RATE and CODE_CONSTRAINT_LENGTH pecifies rate and constraint length of the code. % For a code with rate 1/2, CODE_INVERSE_RATE should be 2 etc. CODE_TYPE=MFD CODE_INVERSE_RATE=2 CODE_CONSTRAINT_LENGTH=7 % MODULATOR_TYPE can be BPSK, QPSK, PSK or QAM. % MODULATOR_SIZE can be 2 or 4 for PSK, 4, 16, 64 or 256 for QAM. Not used for BPSK or QPSK. MODULATOR_TYPE=QAM MODULATOR_SIZE=16 % number of carriers (OFDM_NSC) and cyclic prefix length (OFDM_NCP) in OFDM modulation OFDM_NSC=256 OFDM_NCP=20 % UPSAMPLE factor, bit per symbols, remember that in nonlinearity system fs > 2NB. N order of UPSAMPLE=8 % NL_TYPE is the type of nonlinearity. % It can be LIM_HARD, LIM_SOFT, RAPP,POLY_3RD,MEMORY, LINEAR % NL_IBO is the input backoff in dB NL_TYPE=LIM_SOFT NL_IBO=10

  4. BILKENT-CHALMERS Bilkent: Hakan Arslan, Mustafa Durukal, Ezgi Safak Chalmers: Ali Behravan, Thomas Eriksson • It is of interest to study whether spectral regrowth (out-of-band distortion, distorting neighbor systems) or signal distortion (in-band distortion, distorting own system) is more problematic. By combining several link simulators at different frequency bands, we can combine the two effects into just one measure: bit error rate. This work is still under progress. • A graphical user interface (GUI) for the link simulator was designed.

  5. The linksimulator GUI

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