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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Journal ArticleDOI
Codeword Position Index Based Sparse Code Multiple Access System
TL;DR: A novel variant of sparse code multiple access (SCMA), called codeword position index-based SCMA (CPI-SCMA) is proposed, which can achieve better error rate performance compares to conventional SCMA in the region of moderate and high signal-to-noise ratios.
Journal ArticleDOI
Ultrasonic Indexed Modulation and Multiple Access for Intra-Body Networks
TL;DR: A pulse-based ultrasonic index modulation (UsIM) to enable high data rate and low power IBCs and achieves higher throughput and energy efficiency than the existing IBC systems, and both strategies are important for energy-constrained implanted IBNs.
Journal ArticleDOI
MIMO-OFDM NB-PLC Designs in Underground Medium-Voltage Networks
Mahmoud Elgenedy,Theofilos A. Papadopoulos,Stefano Galli,Andreas I. Chrysochos,Grigoris K. Papagiannis,Naofal Al-Dhahir +5 more
TL;DR: This paper investigates the application of multi-input multi-output (MIMO) orthogonal frequency-division multiplexing (OFDM) to narrowband powerline communications (NB-PLC) over medium-voltage (MV) underground (UG) networks and shows how to reduce the complexity of both the transmitter and receiver implementations while minimizing the data rate loss.
Proceedings ArticleDOI
Frequency offset estimation for index modulation-based cognitive underwater acoustic communications
TL;DR: System model, especially for applications of index modulation in cognitive underwater acoustic communications, will be presented, and an estimation method on the FO over the above model will be proposed, which employs the high order statistics.
Proceedings ArticleDOI
Zero-Padded Tri-Mode Index Modulation Aided OFDM
TL;DR: Theoretical analysis based on the minimum Euclidean distance and Monte Carlo simulation results validate that the proposed ZTM-OFDM can attain performance gain over conventional OFDM and other index modulated OFDM schemes.
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.