Dual-Mode Index Modulation Aided OFDM
TLDR
A dual-mode OFDM technique is proposed, which is combined with index modulation and enhances the attainable throughput of conventional index-modulation-based OFDM and achieves a considerably better BER performance than other OFDM systems using index modulation, while imposing the same or lower computational complexity.Abstract:
Index modulation has become a promising technique in the context of orthogonal frequency division multiplexing (OFDM), whereby the specific activation of the frequency domain subcarriers is used for implicitly conveying extra information, hence improving the achievable throughput at a given bit error ratio (BER) performance. In this paper, a dual-mode OFDM technique (DM-OFDM) is proposed, which is combined with index modulation and enhances the attainable throughput of conventional index-modulation-based OFDM. In particular, the subcarriers are divided into several subblocks, and in each subblock, all the subcarriers are partitioned into two groups, modulated by a pair of distinguishable modem-mode constellations, respectively. Hence, the information bits are conveyed not only by the classic constellation symbols, but also implicitly by the specific activated subcarrier indices, representing the subcarriers’ constellation mode. At the receiver, a maximum likelihood (ML) detector and a reduced-complexity near optimal log-likelihood ratio-based detector are invoked for demodulation. The minimum distance between the different legitimate realizations of the OFDM subblocks is calculated for characterizing the performance of DM-OFDM. Then, the associated theoretical analysis based on the pairwise error probability is carried out for estimating the BER of DM-OFDM. Furthermore, the simulation results confirm that at a given throughput, DM-OFDM achieves a considerably better BER performance than other OFDM systems using index modulation, while imposing the same or lower computational complexity. The results also demonstrate that the performance of the proposed low-complexity detector is indistinguishable from that of the ML detector, provided that the system’s signal to noise ratio is sufficiently high.read more
Citations
More filters
Journal ArticleDOI
Performance Analysis of Repeated Index Modulation with Coordinate Interleaving over Nakagami-m Fading Channel
Le Thi Thanh Huyen,Tran Xuan Nam +1 more
TL;DR: In this paper, the symbol error performance of an extended index modulation for Orthogonal Frequency Division Multiplexing (IM-OFDM) with coordinated interleaving (abbreviated as ReCI) was evaluated over the Nakagami-m fading channel.
Journal ArticleDOI
Enhancing diversity of OFDM with joint spread spectrum and subcarrier index modulations
Vu-Duc Ngo,Thien Van Luong,Nguyen Cong Luong,Mai Xuan Trang,Minh-Tuan Le,Thi Thanh Huyen Le,Xuan Nam Tran +6 more
TL;DR: In this paper , the authors proposed a novel spread spectrum and sub-carrier index modulation (SS-SIM) scheme, which is integrated to OFDM framework to enhance the diversity over the conventional IM schemes.
Posted Content
Enhanced Huffman Coded OFDM with Index Modulation
TL;DR: An enhanced Huffman coded orthogonal frequency-division multiplexing with index modulation (EHC-OFDM-IM) scheme is proposed and it is found that the depth of the Huffman tree has a significant impact on the error performance when the SAP-to-leaf mapping relation is optimized based on CSI.
Journal ArticleDOI
Subcarrier index-power modulated optical OFDM with dual superposition multiplexing for IMDD PON systems
Fadi Halabi,Lin Chen,Roger Philip Giddings,Ali Hamie,Y. Dumas,P. Freyssinet,Christelle Aupetit-Berthelemot,Jianming Tang +7 more
TL;DR: It is shown that over the aforementioned transmission systems, SIPM-OOFDM-DSPM considerably enhances the signal transmission capacity and simultaneously decreases the power penalty, in comparison with other subcarrier-index power-based OOFDM techniques encoded using similar signal modulation formats.
Journal ArticleDOI
Index Modulation Pattern Design for Non-Orthogonal Multicarrier Signal Waveforms
TL;DR: New SEFDM signal formats based on novel activation pattern designs are proposed, which lead to better bit error rate (BER) but also lower peak-to-average power ratio (PAPR) and reduced computational complexity relative to other reported index-modulated systems.
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.
Journal ArticleDOI
Spatial Modulation for Generalized MIMO: Challenges, Opportunities, and Implementation
TL;DR: In this paper, the authors present a comprehensive state-of-the-art survey on SM-MIMO research, to provide a critical appraisal of its potential advantages, and to promote the discussion of its beneficial application areas and their research challenges.
Journal ArticleDOI
Orthogonal Frequency Division Multiplexing With Index Modulation
TL;DR: 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.
BookDOI
OFDM and MC-CDMA for Broadband Multi-User Communications, WLANs and Broadcasting: Hanzo/OFDM
TL;DR: This first complete treatment of OFDM, MIMO(Multiple Input Multiple Output)-OFDM and MC-CDMAC considers the benefits of channel coding and space time coding in the context of various application examples and features numerous complete system design examples.