Journal ArticleDOI
Orthogonal Frequency Division Multiplexing With Index Modulation
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TLDR
It is shown via computer simulations that the proposed OFDM with index modulation scheme achieves significantly better error performance than classical OFDM due to the information bits carried in the spatial domain by the indices of OFDM subcarriers.Abstract:
In this paper, a novel orthogonal frequency division multiplexing (OFDM) scheme, called OFDM with index modulation (OFDM-IM), is proposed for operation over frequency-selective and rapidly time-varying fading channels In this scheme, the information is conveyed not only by M-ary signal constellations as in classical OFDM, but also by the indices of the subcarriers, which are activated according to the incoming bit stream Different low complexity transceiver structures based on maximum likelihood detection or log-likelihood ratio calculation are proposed and a theoretical error performance analysis is provided for the new scheme operating under ideal channel conditions Then, the proposed scheme is adapted to realistic channel conditions such as imperfect channel state information and very high mobility cases by modifying the receiver structure The approximate pairwise error probability of OFDM-IM is derived under channel estimation errors For the mobility case, several interference unaware/aware detection methods are proposed for the new scheme It is shown via computer simulations that the proposed scheme achieves significantly better error performance than classical OFDM due to the information bits carried by the indices of OFDM subcarriers under both ideal and realistic channel conditionsread more
Citations
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Proceedings ArticleDOI
Index Modulated Polar Codes
TL;DR: A novel construction of Polar codes is proposed, named index modulated Polar (IM-Polar) codes, which conveys information not only by the information bits in non-frozen channels as conventional Polar codes, but also by the indices of channels, which are activated according to the incoming bit stream.
Proceedings ArticleDOI
Impact of Channel Estimation on The Performance of OFDM-IM With Barrage Jamming
Ahmet Kaplan,Gunes Karabulut Kurt,Ibrahim Altunbas,Ufuk Altun,Furuzan Atay Onaty,Defne Kucukyavuzy +5 more
TL;DR: In this paper, the effect of least square and linear minimum mean squared error (LMMSE) channel estimation algorithms on the performance of OFDM-IM is investigated in the presence of barrage jamming.
Journal ArticleDOI
Orthogonal frequency division multiplexing with power distribution index modulation
TL;DR: The authors propose OFDM with power distribution index modulation (OFDM-PIM) where a unique power distribution technique is applied to index modulated subcarriers and the superiority of the proposed schemes over reference schemes is demonstrated via extensive computer simulations.
Proceedings ArticleDOI
Performance Analysis of Spatial and Frequency Domain Index-Modulated Reconfigurable Intelligent Metasurfaces
TL;DR: In this article, the authors proposed novel electromagnetics-compliant designs of reconfigurable intelligent surface (RIS) apertures for realizing index modulation (IM) in 6G transceivers.
Journal ArticleDOI
Performance of multitone-frequency and quadrature-amplitude modulation over Rayleigh fading channels
TL;DR: The authors evaluate the frame error rate (FER) performance of a CM system employing MFQAM when a non-binary error-correcting code is employed and demonstrate that the normalised throughput of the CM system computed via the FER shows a similar trend to that obtained via the channel capacity.
References
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Journal Article
Spatial Modulation
TL;DR: An analytical approach for symbol error ratio (SER) analysis of the SM algorithm in independent identically distributed Rayleigh channels results closely match and it is shown that SM achieves better performance in all studied channel conditions, as compared with other techniques.
Proceedings ArticleDOI
A comparison of optimal and sub-optimal MAP decoding algorithms operating in the log domain
TL;DR: A log- MAP algorithm is presented that avoids the approximations in the max-log-MAP algorithm and hence is equivalent to the true MAP, but without its major disadvantages, and it is concluded that the three algorithms increase in complexity in the order of their optimality.
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Statistical Analysis Based on a Certain Multivariate Complex Gaussian Distribution (An Introduction)
Journal ArticleDOI
Space shift keying modulation for MIMO channels
TL;DR: Space shift keying concepts are extended to incorporate channel coding, where in particular, they are considered a bit interleaved coded modulation (BICM) system using iterative decoding for both convolutional and turbo codes.