Intersymbol interference reduction for differential MSK by nonredundant error correction

Masamura, T.

doi:10.1109/25.54953

Cited by 7 publications

(9 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6. Block diagram of double-error correcting NEC receiver [11]. filter, and then transformed back to the time domain.…”

Section: Performance Evaluation Results and Discussionmentioning

confidence: 99%

“…Furthermore it was shown that the output error rate performance of the NEC receiver can be analytically determined by considering the input error patterns containing more errors than its error correction capability. However, unlike the AWGN considered in [8,9,11] or the static CCI environment considered in [12] where the interference is independent from symbol to symbol, fading affects several symbols consecutively thus creating correlation between these symbols. This correlation, which is governed by the fading autocorrelation function (see (7)), is the reason why the occurrence probability of each input pattern is different.…”

Section: System Model Description and Analysismentioning

confidence: 92%

“…As its name implies, the error correction capability of the NEC scheme is achieved without any bandwidth expansion or any additional power requirement as other coding schemes do. In the past, the NEC has been applied to M-ary differential phase-shift keying (DPSK) in an additive white Gaussian noise (AWGN) channel [8] and to differential minimum shift keying (DMSK) in the presence of AWGN [9], adjacent channel interference (ACI) [10] and inter-symbol-interference (ISI) [11].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Nonredundant error correction DQPSK for the aeronautical-satellite channel

Wong

Mathiopoulos²

1995

IEEE Trans. Aerosp. Electron. Syst.

View full text Add to dashboard Cite

The performance of differentially encoded quadrature phase-shift keying (DQPSK) systems employing nonredundant error correction (NEC) receivers with single-and double-error correction capability is analyzed and evaluated for the aeronautical satellite channel. The NEC is an attractive coding technique which employs differential detectors with more than one symbol delay elements and which does not introduce any redundancy as other coding schemes do. As typical for aeronautical satellite communications, a Rician fading channel with Gaussian power spectrum has been considered. Unlike the additive, uncorrelated from symbol to symbol interference such as additive white Gaussian noise (AWGN) or static cochannel interference (CCI) which has been investigated in the past, analysis of the performance in a fading channel is much more difficult. The difficulty arises from the multiplicative and correlative nature of the fading interference. Bit error rate (BER) performance evaluation results have been obtained by means of computer simulation for various channel conditions, including different values of the K-factor and the fading B D T. These results have indicated that considerable performance gains as compared with conventional differentially detected systems are achieved for high values of K and for very fast fading. Both of these conditions are encountered in typical aeronautical communication systems. Wherever possible, heuristic explanations of the trend of the obtained BER performance evaluation results are also given.

show abstract

“…6. Block diagram of double-error correcting NEC receiver [11]. filter, and then transformed back to the time domain.…”

Section: Performance Evaluation Results and Discussionmentioning

confidence: 99%

Section: System Model Description and Analysismentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Nonredundant error correction DQPSK for the aeronautical-satellite channel

Wong

Mathiopoulos²

1995

IEEE Trans. Aerosp. Electron. Syst.

View full text Add to dashboard Cite

show abstract

“…A number of schemes have been exploited in the RF domain to bring the performance of differential receivers closer to coherent. One prominent scheme, involves the use of multiple delay-interferometers (DIs), with the outputs combined to extract more information from the transmitted signal than would be possible with a single DI [1][2][3]. The demodulated signals in the multiple DIs have partially uncorrelated noise, allowing for some error correction after suitable processing of the received information, without any increase in the rate at the transmitter.…”

Section: Introductionmentioning

confidence: 99%

“…Possibly more compelling, it has been shown that these techniques provide even more error correction gain in the non-back-to-back scenario. That is, these techniques provide compensation for transmission, transmitter and receiver impairments [1,3]. Recently multi-bit detection has been utilized in the optical domain to increase the back-to-back receiver sensitivity and to provide compensation for nonlinear phase noise (NLPN) and chromatic dispersion (CD) [4][5][6][7].…”

mentioning

confidence: 99%

DPSK Error Correction using Multi-Bit Detection for Enhanced Sensitivity and Compensation of Impairments

Christen

Lize

Nuccio

et al. 2007

OFC/NFOEC 2007 - 2007 Conference on Optical Fiber Communication and the National Fiber Optic Engineers Conference

View full text Add to dashboard Cite

We demonstrate a novel, multiple-bit DPSK detection scheme, capable of correcting isolated bit errors using simple logic gates, without an increase in the transmission rate. Simulations predict a 0.4dB back-back gain, 0.85dB in the presence of 1 radian of nonlinear phase noise, and further increased gains in the presence of receiver impairments. A 2dB OSNR gain is realized experimentally at a BER of 1e-3 using this error correction scheme. IntroductionOptical differential-phase-shift-keying (DPSK) has become a promising format for future optical transmission systems due to its increased receiver sensitivity when compared to on-off-keying (OOK) and its high tolerance to nonlinear effects and chromatic dispersion. However, when compared to earlier coherent systems, DPSK is still inferior in terms of receiver sensitivity (~1.2 dB at a bit error rate of 1E-3). A number of schemes have been exploited in the RF domain to bring the performance of differential receivers closer to coherent. One prominent scheme, involves the use of multiple delay-interferometers (DIs), with the outputs combined to extract more information from the transmitted signal than would be possible with a single DI [1-3]. The demodulated signals in the multiple DIs have partially uncorrelated noise, allowing for some error correction after suitable processing of the received information, without any increase in the rate at the transmitter. Possibly more compelling, it has been shown that these techniques provide even more error correction gain in the non-back-to-back scenario. That is, these techniques provide compensation for transmission, transmitter and receiver impairments [1,3]. Recently multi-bit detection has been utilized in the optical domain to increase the back-to-back receiver sensitivity and to provide compensation for nonlinear phase noise (NLPN) and chromatic dispersion (CD) [4][5][6][7]. The schemes proposed so far in the optical domain have required either electronic soft detection [4] or modifications to the optical DI, along with possibly unrealistically small feedbacks to control the DI phase [6]. Current limitations of high-speed RF electronics may make it highly desirable to transfer the post-detection circuitry to the digital domain. In this paper, we experimentally demonstrate a novel DPSK multi-bit detection scheme utilizing a 1-bit and a 2-bit DI, followed by all-digital, error-correction logic requiring only a few simple logic gates. The error correction logic allows for the correction of isolated bit errors that occur in either one of the DIs (but not both). Through simulation, we demonstrate an enhanced receiver sensitivity of 0.4 dB in the back-back linear regime and 0.85 dB in the presence of 1 radian of NLPN. Possibly more compelling, we demonstrate that this technique is very powerful at increasing the robustness to receiver impairments, through tolerance simulations to frequency offset and non-optimal optical filtering. We demonstrate our technique experimentally at 10 Gb/s and obtain a performance gain of ~2 dB at...

show abstract

Minimum Shift Keying

Boudreau

Patenaude

1999

Wiley Encyclopedia of Electrical and Electronics Engineering

View full text Add to dashboard Cite

The sections in this article are Modulation Framework Evolution of the MSK Format Basic Mathematical Theory of MSK and GMSK Signals Advanced Topics Acknowledgments Appendix 1. Complex Baseband Representation of Modulated Signals

show abstract

Intersymbol interference reduction for differential MSK by nonredundant error correction

Cited by 7 publications

References 6 publications

Nonredundant error correction DQPSK for the aeronautical-satellite channel

Nonredundant error correction DQPSK for the aeronautical-satellite channel

DPSK Error Correction using Multi-Bit Detection for Enhanced Sensitivity and Compensation of Impairments

Minimum Shift Keying

Contact Info

Product

Resources

About