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
Error Probability Analysis of OFDM-IM With Carrier Frequency Offset
TL;DR: An analytical approach is proposed to evaluate the error probability of OFDM-IM subject to carrier frequency offset (CFO) in fading channels, where the inter-carrier interference (ICI) is properly divided into two parts: the intra-subblock ICI and theinter-subblocks ICI.
Journal ArticleDOI
Cognitive Radio Network Assisted by OFDM With Index Modulation
TL;DR: The potential of an improvement of OFDM-IM by reusing inactive subcarriers to transmit signals for a secondary system is explored and an asymptotically tight upper bound on the bit error rate is derived to evaluate the error performance.
Journal ArticleDOI
On the SEP Analysis of OFDM Index Modulation With Hybrid Low Complexity Greedy Detection and Diversity Reception
TL;DR: In comparison with the benchmark detection, the numerical results and simulations clearly show that the proposed schemes can benefit from diversity gain, at substantially reduced complexity.
Journal ArticleDOI
Impact of CSI Uncertainty on MCIK-OFDM: Tight, Closed-Form Symbol Error Probability Analysis
Thien Van Luong,Youngwook Ko +1 more
TL;DR: A novel framework to analyze the symbol error probability (SEP) for multicarrier index keying orthogonal frequency-division multiplexing (MCIK-OFDM) systems reveals that the GD can achieve nearly optimal error performance as the $M$ -ary modulation size is large or even outperforms the ML under certain CSI conditions.
Journal ArticleDOI
Faster-Than-Nyquist Signaling With Index Modulation
Takumi Ishihara,Shinya Sugiura +1 more
TL;DR: It is shown that a minimum Euclidean distance of proposed FTN-IM signaling is higher than that of the conventional FTN signaling, while providing their numerical performance comparisons in terms of error rates.
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.