DocumentCode :
1961717
Title :
Embedded SI Partial Transmit Sequence with improved bit error rate
Author :
Reisi, Nima ; Attari, Mahmoud Ahmadian ; Reisi, Nima
Author_Institution :
Fac. of Electr. Eng., KNT Univ. of Technol., Tehran
fYear :
2008
fDate :
25-26 March 2008
Firstpage :
1
Lastpage :
5
Abstract :
OFDM is a multicarrier modulation scheme with high bandwidth efficiency and robustness to multipath environment used in high data rate transmission. However, a drawback of this system is the large peak-to-average-power ratio (PAR) of the transmit signal which makes its straightforward implementation quite costly. PAR in an OFDM based system can be reduced significantly by PTS method for which data recovery requires side information (SI) about the phases used at transmitter. Sending SI, not only reduces the rate, but also increases BER, for any error in SI detection can damage a large amount of transmitted information. By introducing a new phase set, we propose a PTS based method for MPSK modulation that doesnpsilat need to explicitly send side information. Simulation results demonstrate the good performance of proposed method in PAR reduction at the expense of adding a little more complexity to the receiver structure. The main drawback of this method is BER degradation in modulations with alphabet size greater than 8. To reduce BER, another algorithm based on set partitioning is suggested. Simulation results show that by degradation of about 0.4dB in PAR reduction, SNR can improve about 2dB when the modulation is 16PSK.
Keywords :
OFDM modulation; error statistics; phase shift keying; sequences; BER; MPSK modulation; OFDM; bit error rate; multicarrier modulation scheme; multiple phase shift keying; orthogonal frequency division multiplexing; set partitioning algorithm; side information partial transmit sequence; Bandwidth; Bit error rate; Degradation; OFDM modulation; Partial transmit sequences; Partitioning algorithms; Peak to average power ratio; Phase modulation; Robustness; Transmitters; Orthogonal Frequency Division Multiplexing (OFDM); Partial transmit Sequence (PTS); Peak-to-Average-Power-Ratio (PAPR); Side Information (SI);
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical Engineering, 2008. ICEE 2008. Second International Conference on
Conference_Location :
Lahore
Print_ISBN :
978-1-4244-2292-0
Electronic_ISBN :
978-1-4244-2293-7
Type :
conf
DOI :
10.1109/ICEE.2008.4553913
Filename :
4553913
Link To Document :
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