Frequency-Modulated OFDM: A New Waveform for High-Mobility Wireless Communications

OFDM for High Data Rate, High-Mobility, Wide-Area Wireless Communications

In recent years, there has been considerable growth in interest in wireless access to wide area data networks at high data rates. This growth has been fuelled by the simultaneous development of the high-speed wired data networks (e.g., the Internet), wide-spread availability of powerful mobile computing devices, rapidly dropping prices for increasingly sophisticated electronic devices, plus the...

Channel Estimation for Wireless OFDM Communications

1.1 Preliminary Orthogonal frequency-division multiplexing (OFDM) communication techniques have recently received significant research attention because of their ability to maintain effective transmission and highly efficient bandwidth utilization in the presence of various channel impairments, such as severely frequency-selective channel fades caused by long multipath delay spreads and impulsi...

Unitary Matrix Frequency Modulated OFDM for Power Line Communications over Impulsive Noise Channels

Power line channel is the time-frequency variant channel with impulsive noise. Therefore, power line communication makes performance degradation due to time-frequency variant and impulsive noise. To overcome performance degradation, we consider the unitary signal constellation scheme and investigate the performance improvement of unitary matrix frequency modulated orthogonal frequencydivision m...

Mimo-ofdm Wireless Communications with Matlab Mimo-ofdm Wireless Communications with Matlab

A Highly Accurate Blind Frequency-Offset Synchronization for OFDM Communications

We address the problem of carrier frequency offset (CFO) synchronization in Orthogonal Frequency Division Multiplexing (OFDM) communications systems in the context of frequency-selective fading channels. We consider the case where the transmitted symbols have constant modulus, i.e., Phase-Shift-Keying (PSK) constellations. A novel blind CFO synchronization algorithm is developed. The new algori...