6 papers
Underlay Control Signaling for Ultra-Reliable Low-Latency IoT Communications
Amir Aminjavaheri, Ahmad RezazadehReyhani, Ramon Khalona +2
Future mobile networks not only envision enhancing the traditional link quality and data rates of mobile broad band (MBB) links, but also development of new control channels to mee…
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…