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Exact SINR analysis of OFDM systems under joint Tx/RX I/Q imbalance
(
IEEE
, 2013 , Conference Paper)
The direct-conversion architecture used for Orthogonal Frequency Division Multiplexing (OFDM) systems suffers from intercarrier interference (ICI) between image subcarriers in each OFDM symbol due to I/Q imbalance between ...
Beamforming OFDM Performance under Joint Phase Noise and I/Q Imbalance
(
IEEE
, 2015 , Article)
Phase noise (PHN) and in-phase/quadrature (I/Q) imbalance are two major RF impairments in direct-conversion wireless transceivers. Beamforming and orthogonal frequency division multiplexing (OFDM) schemes have been adopted ...
Exact average OFDM subcarrier SINR analysis under joint transmit-receive I/Q imbalance
(
IEEE
, 2014 , Article)
The subcarrier signal-to-interference-plus-noise ratio (SINR) expression for orthogonal frequency-division multiplexing (OFDM) systems impaired by in-phase/quadrature (I/Q) imbalance is a ratio of correlated random variables. ...
Multiple Relay Selection and Beamforming in Dual-Hop Amplify-and-Forward Relay Networks
(
Institute of Electrical and Electronics Engineers Inc.
, 2019 , Article)
In this paper, the problems of multiple relay selection and beamforming optimization are considered for a dual-hop amplify-and-forward relaying network under individual and total power constraints. The selection is performed ...
A general framework for the design and analysis of sparse FIR linear equalizers
(
Institute of Electrical and Electronics Engineers Inc.
, 2016 , Conference Paper)
Complexity of linear finite-impulse-response (FIR) equalizers is proportional to the square of the number of nonzero taps in the filter. This makes equalization of channels with long impulse responses using either zero-forcing ...
Quasi-sparsest solutions for quantized compressed sensing by graduated-non-convexity based reweighted ?1minimization
(
European Signal Processing Conference, EUSIPCO
, 2016 , Conference Paper)
In this paper, we address the problem of sparse signal recovery from scalar quantized compressed sensing measurements, via optimization. To compensate for compression losses due to dimensionality reduction and quantization, ...
On quantized compressed sensing with saturated measurements via convex optimization
(
European Signal Processing Conference, EUSIPCO
, 2016 , Conference Paper)
In this paper, we address the problem of sparse signal recovery, from multi-bit scalar quantized compressed sensing measurements, where the saturation issue is taken into account. We propose a convex optimization approach, ...
Achievable Rates of Buffer-Aided Full-Duplex Gaussian Relay Channels
(
Institute of Electrical and Electronics Engineers Inc.
, 2017 , Article)
We derive closed-form expressions for the achievable rates of a buffer-aided full-duplex (FD) multiple-input multiple-output Gaussian relay channel. The FD relay still suffers from residual self-interference (RSI) after ...
Securing Untrusted RF-EH Relay Networks Using Cooperative Jamming Signals
(
Institute of Electrical and Electronics Engineers Inc.
, 2017 , Article)
We propose a new scheme to secure a wireless-powered untrusted cooperative-communication network, where a legitimate source node (Alice) transmits her information messages to a legitimate destination node (Bob) through the ...
Security-Enhanced SC-FDMA Transmissions Using Temporal Artificial-Noise and Secret Key Aided Schemes
(
Institute of Electrical and Electronics Engineers Inc.
, 2019 , Article)
We investigate the physical-layer security of uplink single-carrier frequency-division multiple-access (SC-FDMA) systems. Multiple users, Alices, send confidential messages to a common legitimate base-station, Bob, in the ...