5 papers · 1 filter
Analysis of Discrete-Time MIMO OFDM-Based Orthogonal Time Frequency Space Modulation
Ahmad RezazadehReyhani, Arman Farhang, Mingyue Ji +2
Orthogonal Time Frequency Space (OTFS) is a novel modulation scheme designed in the Doppler-delay domain to fully exploit time and frequency diversity of general time-varying chann…
Low Complexity Modem Structure for OFDM-based Orthogonal Time Frequency Space Modulation
Arman Farhang, Ahmad RezazadehReyhani, Linda E. Doyle +1
Orthogonal time frequency space (OTFS) modulation is a two-dimensional signaling technique that has recently emerged in the literature to tackle the time-varying (TV) wireless chan…
OFDM Without CP in Massive MIMO
Amir Aminjavaheri, Arman Farhang, Ahmad RezazadehReyhani +2
We study the possibility of removing the cyclic prefix (CP) overhead from orthogonal frequency division multiplexing (OFDM) in massive multiple-input multiple-output (MIMO) systems…
Asynchronous Performance of Circularly Pulse-Shaped Waveforms for 5G
Ahmad RezazadehReyhani, Behrouz Farhang-Boroujeny
The fifth generation of wireless networks (5G) necessitates the use of waveforms with loose constraints on synchronization in multiuser scenarios. Also, carrier aggregation, as a w…
Impact of Timing and Frequency Offsets on Multicarrier Waveform Candidates for 5G
Amir Aminjavaheri, Arman Farhang, Ahmad RezazadehReyhani +1
This paper presents a study of the candidate waveforms for 5G when they are subject to timing and carrier frequency offset. These waveforms are: orthogonal frequency division multi…