Proceedings ArticleDOI
Developments in orthogonal frequency division multiplexing (OFDM) system-a survey
M. N. Suma,B Kanmani +1 more
- pp 1-4
Reads0
Chats0
TLDR
Challenges in Orthogonal frequency division multiplexing are presented and work done so far in channel equalisation and different transforms used in OFDM system are presented.Abstract:
In today's communication scenario, high data rate single-carrier transmission may not be feasible due to too much complexity of the equalizer in the receiver. To overcome the frequency selectivity of the wideband channel experienced by single-carrier transmission, multiple carriers can be used for high rate data transmission. Orthogonal frequency division multiplexing (OFDM) , is multicarrier system which has become a modulation in physical layer of next generation WiMAX, LTE system. In this paper effort is made to present challenges in OFDM and work done so far in channel equalisation and different transforms used in OFDM system.read more
Citations
More filters
Proceedings ArticleDOI
A novel hybrid ICI cancellation technique for OFDM optimization
TL;DR: In this paper, a new proposed technique is presented to further improve OFDM performance with varying Doppler shift error, which has significant improvements in the error performance and comparative analysis suggest that proposed technique has outperformed legacy Self Cancellation and Maximum Likelihood ICI cancellation scheme with huge gain.
Journal ArticleDOI
Computational Performances of OFDM Using Different FFT Algorithms
TL;DR: With intuitive mathematical analysis, it has been shown that with the reduced complexity that VFFT can offer, OFDM performance can be greatly improved in terms of calculations needed.
PAPR Reduction Technique in OFDM System For 4G Wireless Applications Using Partial Transmit Sequence Method
TL;DR: PTS technique for 4G wireless communication applications is analyzed and simulated and it is observed that the PTS techniques are more efficient, practical and attractive.
References
More filters
Proceedings ArticleDOI
Performance of turbo-coded OFDM
Alister G. Burr,G.P. White +1 more
TL;DR: It is shown that turbo-codes of length 8192 can give performance improvements of some 8 dB on a Rayleigh fading channel (such as may be expected), over the conventional convolutional codes in the existing standards.
Proceedings ArticleDOI
Blind adaptive channel equalization for OFDM using the cyclic prefix data
TL;DR: This paper presents a blind adaptive equalization algorithm which uses the cyclic prefix data of the OFDM signals to equalize the multipath channel and shows improved BER performance for the equalized system over the non-equalized system when long channel delays are present.
Proceedings ArticleDOI
On the DHT-based multicarrier tranceiver over multipath fading channel
TL;DR: A DHT-based OFDM architecture is devised that can perfectly diagonalize the channel matrix base on the complementary property of DHT matrix and channel gain symmetric features and numerical simulations have shown the validity of the proposed D HT- based OFDM system.
Proceedings ArticleDOI
MMSE equalization for discrete wavelet packet based OFDM
TL;DR: In this paper, a minimum mean square error (MMSE) equalizer was proposed for Wavelet Packet Transform (WPT) based OFDM in the presence of additive white Gaussian noise (AWGN) and impulse noise.
Introduction to "the history of ofdm" the history of orthogonal frequency-division multiplexing
TL;DR: The background and some of the striking early development of OFDM are described, with explanation of the motivations for using it.