Journal ArticleDOI
Orthogonal Frequency Division Multiplexing With Index Modulation
Reads0
Chats0
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
More filters
Journal ArticleDOI
Сигнально-кодові конструкції з індексною модуляцією піднесних OFDM та просторово-часовим блочним кодуванням для частотно-селективних та нестаціонарних каналів безпроводового зв’язку
TL;DR: In this article, a spectrally and energy-efficient signal code construction (SCC) based on index modulation aided OFDM and Space-Time Block Coding, and also its noise-immune version in phase instability conditions with Inter-Channel Interference compensation operator, built into Alamouti's coder structure, and increasing signals frequency diversity operator (Walsh-Hadamard) are proposed.
Journal ArticleDOI
Index Modulation Multiple-Access (IMMA): Efficient Techniques for Downlink Millimeter Waves Outdoor Channel
TL;DR: In this paper, the authors proposed two new multiple access schemes for downlink transmission based on the combination of orthogonal frequency division multiplexing (OFDM) with index modulation (IM), namely OFDM-IM.
Journal ArticleDOI
Orthogonal frequency division multiplexing with cascade index modulation
Journal ArticleDOI
Deep neural network-based detection of index modulated MIMO-OFDM
TL;DR: In this paper , a fully connected DNN based MIMO-OFDM-IM to jointly detect the transmitted symbols from each antenna is proposed and its performance is analyzed, which shows a close bit error rate performance to optimum detection with lower computational complexity.
Journal ArticleDOI
Secrecy enhancement in MIMO-OFDM-IM systems with limited RF chains
Zhenzhen Gao,Di Shen,Xuewen Liao +2 more
TL;DR: The proposed secure MIMO OFDM-IM shows better performance against eavesdropping when the eavesdropping and legitimate links have the same channel quality and the eavesdropper-legitimate channel correlation is considered.
References
More filters
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.