Sphere-packings, lattices, and groups
Sphere-packings, lattices, and groups
Time-frequency analysis: theory and applications
Time-frequency analysis: theory and applications
A Time-Frequency Well-localized Pulse for Multiple Carrier Transmission
Wireless Personal Communications: An International Journal
Mobile Fading Channels
ICI reduction in OFDM systems by using improved sinc power pulse
Digital Signal Processing
IEEE Transactions on Signal Processing
Max-SINR ISI/ICI-Shaping Multicarrier Communication Over the Doubly Dispersive Channel
IEEE Transactions on Signal Processing
Orthogonal time-frequency signaling over doubly dispersive channels
IEEE Transactions on Information Theory
Wireless communications: past events and a future perspective
IEEE Communications Magazine - Part Anniversary
Nonorthogonal pulseshapes for multicarrier communications in doubly dispersive channels
IEEE Journal on Selected Areas in Communications
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Hexagonal multicarrier modulation (HMM) system is the technique of choice to overcome the impact of time-frequency dispersive transmission channel. This paper examines the effects of insufficient synchronization (carrier frequency offset, timing offset) on the amplitude and phase of the demodulated symbol by using a projection receiver in hexagonal multicarrier modulation systems. Furthermore, effects of CFO, TO, and channel spread factor on the performance of signal-to-interference-plus-noise ratio (SINR) in hexagonal multicarrier modulation systems are further discussed. The exact SINR expression versus insufficient synchronization and channel spread factor is derived. Theoretical analysis shows that similar degradation on symbol amplitude and phase caused by insufficient synchronization is incurred as in traditional cyclic prefix orthogonal frequency-division multiplexing (CP-OFDM) transmission. Our theoretical analysis is confirmed by numerical simulations in a doubly dispersive (DD) channel with exponential delay power profile and U-shape Doppler power spectrum, showing that HMM systems outperform traditional CP-OFDM systems with respect to SINR against ISI/ICI caused by insufficient synchronization and doubly dispersive channel.