Results 1 to 10 of about 1,713 (254)

Equalization of linearly frequency-selective fading channels [PDF]

IEEE Transactions on Communications, 1997
A simple technique for removing intersymbol interference (ISI) introduced by "linearly frequency-selective" fading channels is presented. The technique involves the optimization of the overall impulse response of the transmit and receive filters and effectively reduces the channel to one which is flat fading.
U Mengali, D P Taylor
exaly   +4 more sources

Decoding of polar-coded OFDM systems over multipath fading channels with interleaving and channel state information [PDF]

Scientific Reports
In this paper, we investigate the decoding performance and corresponding decoding strategies for polar-coded orthogonal frequency division multiplexing (OFDM) system operating under multipath fading channels.
Mingbao Wu, Yi Yu, Fangying Wan, Yanhua Lin, Yong Li, Zhian Zheng   +5 more
doaj   +2 more sources

Transformer based HF communication demodulation [PDF]

Scientific Reports
In low signal-to-noise ratio (SNR) environments, shortwave channels are subject to impairments such as multipath effects, frequency-selective fading, and time-selective fading.
Can Lu, Feng Wang, Rui Zhu, Wen-Qiang Cao, Biao-Feng Wang, Wei-Bin Cai   +5 more
doaj   +2 more sources

Orthogonal frequency division multiplex synchronization techniques for frequency-selective fading channels [PDF]

IEEE Journal on Selected Areas in Communications, 2001
The effect of time-domain and frequency-domain synchronization errors is quantified in the context of various coherently and noncoherently detected 1, 2, and 4 bits/symbol OFDM constellations, in order to demonstrate the wide applicability of the techniques proposed for mitigating the bit error rate (BER) performance degradations inflicted. A reference
Lorenzo Piazzo, Lajos Hanzo
exaly   +4 more sources

Effective capacity channel model for frequency-selective fading channels [PDF]

Wireless Networks, 2005
To efficiently support quality of service (QoS) in future wireless networks, it is important to model a wireless channel in terms of connection-level QoS metrics such as data rate, delay and delay-violation probability. To achieve this, in [7], we proposed and developed a link-layer channel model termed effective capacity (EC) for flat fading channels.
Dapeng Wu 0001, Rohit Negi
openaire   +1 more source

Optimal training for frequency-selective fading channels [PDF]

2001 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.01CH37221), 2002
Many communications systems employ training, ie, the transmission of known signals, so that the channel parameters may be learned at the receiver. This has a dual effect: too little training and the channel is improperly learned, too much training and there is no time left for data transmission before the channel changes.
Haris Vikalo, Babak Hassibi, Bertrand M. Hochwald, Thomas Kailath   +3 more
openaire   +2 more sources

An adaptive receiver for the time- and frequency-selective fading channel [PDF]

IEEE Transactions on Communications, 1997
An adaptive receiver is presented in this paper for the reception of linearly modulated signals transmitted over a time- and frequency-selective fading channel. The channel is modeled as a truncated power series which represents the dispersive fading channel as a sum of three elementary flat-fading channels. The proposed receiver consists of a sequence
Wing Seng Leon, Desmond P. Taylor
openaire   +1 more source

Performance Analysis of MIMO STBC System in Flat Fading and Frequency Selective Fading Channels

Journal of Electrical, Electronics and Informatics, 2019
Multiple Input Multiple Output (MIMO) technology is a technique that can be used to overcome multipath fading. The multipath fading is caused by signals coming from several paths that experience different attenuations, delays and phases.
Pebri Yeni Samosir, Nyoman Pramaita, I Gst A. Komang Diafari Djuni Hartawan, Ni Made Ary Esta Dewi Wirastuti   +3 more
doaj   +1 more source

A Low-Complexity Equalizer for Video Broadcasting in Cyber-Physical Social Systems Through Handheld Mobile Devices

IEEE Access, 2020
In Digital Video Broadcasting-Handheld (DVB-H) devices for cyber-physical social systems, the Discrete Fractional Fourier Transform-Orthogonal Chirp Division Multiplexing (DFrFT-OCDM) has been suggested to enhance the performance over Orthogonal ...
Ahmad A. A. Solyman, Hani Attar, Mohammad R. Khosravi, Varun G. Menon, Alireza Jolfaei, Venki Balasubramanian, Buvana Selvaraj, Pooya Tavallali   +7 more
doaj   +1 more source

Improved Pilot-Aided Channel Estimation for MIMO-OFDM Fading Channels

International Journal of Antennas and Propagation, 2013
An improved pilot-aided channel estimation scheme is proposed to enhance the channel estimation accuracy of multiple-input multiple-output-orthogonal frequency division multiplexing (MIMO-OFDM) fading channels. Based on the adaptive path number selection
J. Mar, Chi-Cheng Kuo, M. B. Basnet
doaj   +1 more source