Browsing by Subject "Channel estimation"
Now showing items 1-14 of 14
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Channel secondary random process for robust secret key generation
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)The broadcast nature of wireless communications imposes the risk of information leakage to adversarial users or unauthorized receivers. Therefore, information security between intended users remains a challenging issue. ... -
Design and analysis framework for sparse FIR channel shortening
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)A major performance and complexity limitation in broadband communications is the long channel delay spread which results in a highly-frequency-selective channel frequency response. Channel shortening equalizers (CSEs) are ... -
Diversity-multiplexing tradeoff for log-normal fading channels
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)Although there has been a growing interest on the study of diversity-multiplexing tradeoff (DMT), the existing works are mostly restricted to the outcomes reported for Rayleigh, Rician, and Nakagami fading channels. In ... -
Estimation of highly selective channels for downlink LTE system by a robust neural network
( IEEE , 2010 , Conference Paper)In this paper we propose a robust channel estimator for Long Term Evolution (LTE) downlink highly selective using neural network. This method uses the information provided by the reference signals to estimate the total ... -
Full-Duplex Amplify-and-Forward Relaying under I/Q Imbalance
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Article)A major performance limiter in amplify-and-forward (AF) full-duplex (FD) relaying is the high level of residual self-interference (SI) due to the imperfect estimation of the effective self-interfering channel. One primary ... -
Hybrid underlay/overlay cognitive radio system with hierarchical modulation in the presence of channel estimation error
( IEEE , 2014 , Conference Paper)In this paper, we study the performance of hybrid cognitive radio (CR) system in the presence of channel estimation error (CER) in terms of bit-error-probability (BEP) and outage probability. We assume simultaneous switching ... -
Iterative compressive estimation and decoding for network-channel-coded two-way relay sparse ISI channels
( IEEE , 2012 , Article)We propose an iterative compressive channel estimation and decoding scheme for network-channel-coded two-way relay sparse intersymbol interference channels. The underlying system model comprises two source nodes and one ... -
Performance analysis of cooperative communication system with feedback delay and channel estimation error
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)In this paper, we investigate the impact of feedback delay and channel estimation error (CEE) on the performance of wireless multi-user decode-and-forward (DF) relay systems in independent and non identically distributed ... -
Performance Analysis of Index Modulation Based Multiple Access under Imperfect Channel Estimation
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Conference Paper)Future generations of wireless communication systems are expected to serve a large number of users with different quality of service requirements. Given the limited spectrum resources, the current multiple access schemes ... -
Reed-Solomon coding for cooperative wireless communication
( IEEE , 2010 , Conference Paper)During the last few years, several authors have studied the performance of many different types of channel codes for cooperative communication systems. Some of these codes include Low Density Parity Check (LDPC), Turbo and ... -
Robust secret key extraction from channel secondary random process
( John Wiley and Sons Ltd , 2016 , Conference Paper)The vast majority of existing secret key generation protocols exploit the inherent randomness of the wireless channel as a common source of randomness. However, independent noise added at the receivers of the legitimate ... -
Secret key generation based on AoA estimation for low SNR conditions
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)In the context of physical layer security, a physical layer characteristic is used as a common source of randomness to generate the secret key. Therefore an accurate estimation of this characteristic is the core for reliable ... -
Secret key generation based on channel and distance measurements
( IEEE Computer Society , 2014 , Conference Paper)Within the paradigm of physical layer secrecy, typically a physical layer specific characteristic is used as key generator to guarantee information hiding from eavesdroppers. In this paper, we propose a novel secret key ... -
Time-frequency compressed spectrum sensing in cognitive radios
( Institute of Electrical and Electronics Engineers Inc. , 2013 , Conference Paper)In this paper, we investigate the use of time-frequency analysis for improvement of spectrum sensing in cognitive radios and exploit compressed sensing (sampling) to reduce the extremely high sampling rate of signal in ...