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Multi-h CPFSK mapper in an OFDM system can offer significant gain in both PAPR and bit error rate probability. The OFDM PAPR problem is addressed and investigated using SLM reduction technique. Next, an OFDM system with a multi-h CPFSK mapper is considered and its performance is evaluated in terms of the upper and lower bounds on bit error rate probability, and a closed form expression is obtained...
The Second generation Terrestrial Digital Video Broadcasting (DVB-T2) standard provides a specific symbol, called PI symbol, in order to facilitate initial time and frequency synchronisation by identifying the correct start of the frame. Several schemes, exploiting this symbol, have been devised to perform this particular function. In this paper, a modified maximum likelihood estimation for the time...
Initial downlink synchronization for orthogonal frequency division multiple access (OFDMA) network access involves timing and frequency synchronization. The frequency offset is produced by oscillator drifts and time-varying Doppler shifts. In mobile WiMAX 802.16e carrier frequency offset (CFO) can be divided into: integral carrier frequency offset (ICFO) and fractional carrier frequency offset (FCFO)...
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