Design of good low-rate coding schemes for ISI channels based on spectral shaping

Doan, D.N.; Narayanan, Krishna R.

doi:10.1109/twc.2005.853798

Cited by 8 publications

(3 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The optimization of these codes has been done for the binary erasure channel (BEC) [8] and for the AWGN channel [9]. The optimization of LDPC codes for various nonstandard channels has also been addressed in the literature [10,11].…”

Section: Introductionmentioning

confidence: 99%

Optimized Irregular Low-Density Parity-Check Codes for Multicarrier Modulations over Frequency-Selective Channels

Mannoni

Declercq

Gellé

2004

EURASIP J. Adv. Signal Process.

View full text Add to dashboard Cite

This paper deals with optimized channel coding for OFDM transmissions (COFDM) over frequency-selective channels using irregular low-density parity-check (LDPC) codes. Firstly, we introduce a new characterization of the LDPC code irregularity called Ã‚Â“irregularity profile.Ã‚Â” Then, using this parameterization, we derive a new criterion based on the minimization of the transmission bit error probability to design an irregular LDPC code suited to the frequency selectivity of the channel. The optimization of this criterion is done using the Gaussian approximation technique. Simulations illustrate the good performance of our approach for different transmission channels

show abstract

Section: Introductionmentioning

confidence: 99%

Optimized Irregular Low-Density Parity-Check Codes for Multicarrier Modulations over Frequency-Selective Channels

Mannoni

Declercq

Gellé

2004

EURASIP J. Adv. Signal Process.

View full text Add to dashboard Cite

show abstract

“…The idea is to affect the information rates at the legitimate receiver minimally while imposing considerable degradations in the eavesdropper's reception. This approach is inspired by the results of the several studies in the information theory literature in which transmission strategies rely on matching the spectrum of the input to that of the channel to increase information rates over ISI channels (see, e.g., [8] and the references therein). We introduce AN-aided secure transmission strategies for the scenarios where: a) only the CSI of the legitimate receiver is available at the transmitter, b) CSI of both the main and the eavesdropper's channel is known by the transmitter.…”

Section: Introductionmentioning

confidence: 99%

Artificial-Noise-Aided Secure Transmission over Finite-Input Intersymbol Interference Channels

Hanoğlu

Aghdam

Duman

2018

2018 25th International Conference on Telecommunications (ICT)

View full text Add to dashboard Cite

We propose an artificial noise (AN) injection strategy for securing communication over finite-input intersymbol interference (ISI) channels. The technique relies on injection of colored noise whose power spectral density has the least match with the spectrum of the main channel in a certain sense. By evaluation of an achievable secrecy rate, we demonstrate that the proposed AN injection based solution results in a considerable improvement over the existing approaches, especially when the eavesdropper works at high signal-to-noise ratios (SNRs).Index Terms-Physical layer security, finite-state wiretap channel, artificial noise, inter-symbol interference.

show abstract

“…When CSI is available, code design for multipath fading ISI channels can be done in two ways-a soft output equalizer can be used in conjunction with a decoder and codes can be optimized [13], [14] or OFDM can be used to circumvent ISI and code design for flat-fading channels can be directly applied. The second approach is simpler and is considered in this paper, but perfect CSI is not assumed at the receiver.…”

Section: Introductionmentioning

confidence: 99%

Design of irregular repeat accumulate codes for OFDM systems with partial channel state information

Sankar

Narayanan

2005

IEEE Trans. Wireless Commun.

Self Cite

View full text Add to dashboard Cite

Irregular repeat accumulate (IRA) codes perform very close to capacity on some memory-less channels with coherent detection. Further, they can be encoded and decoded in linear time. This paper considers the design of IRA codes for intersymbol interference (ISI) channels when only partial channel state information (CSI) is available at the receiver and orthogonal frequencydivision multiplexing (OFDM) is used as the modulation format. The authors use a simple receiver structure that performs iterative channel estimation and decoding and use nonsystematic IRA codes that are optimized for this receiver. This combination is shown to perform within a few tenths of a decibel from the capacity of a receiver with perfect CSI and is also shown to be robust to change in the number of channel taps and Doppler.Index Terms-Channel capacity, channel coding, extrinsic information transfer (EXIT) charts, fast Fourier transform (FFT), irregular repeat accumulate (IRA) codes, iterative detection and decoding, orthogonal frequency-division multiplexing (OFDM), partial channel state information, Rayleigh fading channels.

show abstract

Design of good low-rate coding schemes for ISI channels based on spectral shaping

Cited by 8 publications

References 24 publications

Optimized Irregular Low-Density Parity-Check Codes for Multicarrier Modulations over Frequency-Selective Channels

Optimized Irregular Low-Density Parity-Check Codes for Multicarrier Modulations over Frequency-Selective Channels

Artificial-Noise-Aided Secure Transmission over Finite-Input Intersymbol Interference Channels

Design of irregular repeat accumulate codes for OFDM systems with partial channel state information

Contact Info

Product

Resources

About