Proceedings ArticleDOI
Equalization of OFDM-systems by interference cancellation techniques
M. Toeltsch,A.F. Molisch +1 more
- Vol. 6, pp 1950-1954
TLDR
Serial and parallel interference cancellation techniques, which were originally developed for CDMA multiuser techniques, can be used for OFDM equalization and are much more efficient than a brute force inversion of the channel matrix.Abstract:
Intercarrier interference can be a dominant source of errors in OFDM-systems, requiring some sort of equalization. We show that serial and parallel interference cancellation techniques, which were originally developed for CDMA multiuser techniques, can be used for OFDM equalization and are much more efficient than a brute force inversion of the channel matrix. Maximum excess delays of up to 70% of the OFDM block duration can be handled without loss of performance.read more
Citations
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Journal ArticleDOI
Iterative Methods for Cancellation of Intercarrier Interference in OFDM Systems
TL;DR: Simulations show that serial or parallel interference cancellation can be used to drastically reduce the error floor in conventional receivers and, depending on the SNR and the origin of the ICI, one of the schemes performs best.
Journal ArticleDOI
Efficient cyclic prefix reconstruction for coded OFDM systems
Cheol-Jin Park,Gi-Hong Im +1 more
TL;DR: An improved method to mitigate interference when the cyclic prefix is not sufficient for coded orthogonal frequency-division multiplexing (OFDM) systems is described, based on the residual intersymbol interference cancellation (RISIC).
Journal ArticleDOI
Successive narrowband interference cancellation for OFDM systems
TL;DR: A new receiver based on successive NBI cancellation is synthesized, which is capable of assuring good NBI rejection, without requiring insertion of additional redundancy in the OFDM signal.
Patent
Impulse noise reduction to an MCM signal
TL;DR: In this paper, the authors proposed a method to reduce the noise in a multiple carrier modulated (MCM) signal by estimating impulse noise based on the equalized signal and removing a portion of the estimated impulse noise.
Journal ArticleDOI
Compressive Sensing-Based Detector Design for SM-OFDM Massive MIMO High Speed Train Systems
TL;DR: Simulation results verify that the proposed detectors have an apparent performance gain compared to the conventional CS schemes with the same complexity order.
References
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Book
OFDM for Wireless Multimedia Communications
Richard van Nee,Ramjee Prasad +1 more
TL;DR: In this paper, the authors present a comprehensive introduction to OFDM for wireless broadband multimedia communications and provide design guidelines to maximize the benefits of this important new technology, including modulation and coding, synchronization, and channel estimation.
Journal ArticleDOI
Minimum probability of error for asynchronous Gaussian multiple-access channels
TL;DR: The results show that the proposed multiuser detectors afford important performance gains over conventional single-user systems, in which the signal constellation carries the entire burden of complexity required to achieve a given performance level.
Proceedings ArticleDOI
Interchannel interference analysis of OFDM in a mobile environment
M. Russell,Gordon L. Stuber +1 more
TL;DR: The article examines the effects of ICI through analysis and simulation, in the context of a system design for HDTV digital video broadcasting to mobile receivers, showing that ICI can be modeled as an additive Gaussian random process that leads to an error floor which can be determined analytically as a function of the Doppler frequency.
Journal ArticleDOI
Nonorthogonal pulseshapes for multicarrier communications in doubly dispersive channels
Werner Kozek,Andreas F. Molisch +1 more
TL;DR: This work derives the expected intersymbol/interchannel interference of such a nonorthogonal FDM (NOFDM) system under the assumption of a wide-sense stationary uncorrelated scattering (WSSUS) channel and compares OFDM and NOFDM schemes with regard to robustness against delay/Doppler spread.
Journal ArticleDOI
A family of multiuser decision-feedback detectors for asynchronous code-division multiple-access channels
TL;DR: It is found that decision-feedback detectors compare favorably with more complex two-stage methods and maintain good performance under diverse channel conditions.