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
Uplink Analysis of Cell-Free Massive MIMO System Combined with Index Modulation
TL;DR: In this article, the uplink transmission scheme combining spatial index modulation with cell-free massive MIMO system is studied, where the access point (AP) and users in the cell free network have multiple antennas.
Proceedings ArticleDOI
Power-and-Index based Multiple Access for V2X Networks
TL;DR: Performance evaluation in this paper shows that both diversity order and power gain can be improved if the proposed scheme is deployed, resulting in a lower probability of index and symbol errors in presence of sparsely activated sub-carriers compared to Orthogonal Multiple Access (OMA) or NOMA.
Book ChapterDOI
Research on Multi-carrier System Based on Index Modulation.
Dong Wang,Jie Yang,Bing Zhao +2 more
TL;DR: The research on OFDM-IM has very important theoretical significance and application value, and the on-demand adjustment between system bit error rate (BER) performance and spectral efficiency can be realized by configuring the number of active subcarriers in each subcarrier group.
Journal ArticleDOI
MIMO spread spectrum GFDM communication systems with index modulation
TL;DR: In this paper , a combination of spread spectrum (SS) and index modulation (IM) under the framework of generalized frequency division multiplexing (GFDM) is proposed, where the information bits are jointly conveyed by the indices of spreading codes and the conventional M-ary modulated symbols, which increase the spectrum efficiency and improve the bit error rate performance.
Posted Content
IMRecoNet: Learn to Detect in Index Modulation Aided MIMO Systems with Complex Valued Neural Networks
TL;DR: In this paper, a deep learning-based detector for the IM aided MIMO (IM-MIMO) systems is proposed, where the detection process is formulated as a sparse reconstruction problem by utilizing the inherent attributes of IM.
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.
Journal ArticleDOI
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.