Opportunistic Spectrum Sharing Based on OFDM With Index Modulation

Li, Qiang; Wen, Miaowen; Dang, Shuping; Başar, Ertuğrul; Poor, H. Vincent; Chen, Fangjiong

doi:10.1109/twc.2019.2943159

Cited by 31 publications

(16 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As for the AF relay protocol in the above model, a novel opportunistic spectrum sharing scheme is proposed from the primary transmitter to secondary transmitter. The simulation result corroborates the superiority on BER and SE compared with OFDM-CR and OFDM-IM-AF (Li et al, 2020c).…”

Section: State-of-the-art Achievementssupporting

confidence: 71%

Toward Spectral and Energy Efficient 5G Networks Using Relayed OFDM With Index Modulation

et al. 2021

Self Cite

View full text Add to dashboard Cite

Next generation wireless networks are expected to provide much higher data throughput and reliable connections for a far larger number of wireless service subscribers and machine-type nodes, which results in increasingly stringent requirements of spectral efficiency (SE) and energy efficiency (EE). Orthogonal frequency-division multiplexing with index modulation (OFDM-IM) stands out as a promising solution to satisfy the SE requirement with a reasonable increase in system complexity. However, the EE of OFDM-IM is still required to be enhanced. Moreover, diversity gain is difficult to harvest from the frequency domain without affecting the SE for OFDM-IM systems, which hinders further reliability enhancement. In this regard, relay-assisted OFDM-IM, as a promising joint paradigm to achieve both high SE and EE, was proposed and has been studied since last year. The objectives of this study are to summarize the recent achievements of this joint paradigm, articulate its pros and cons, and reveal the corresponding challenges and future work. More importantly, we provide a full picture and insights into the implementation of this new paradigm in next generation networks.

show abstract

Section: State-of-the-art Achievementssupporting

confidence: 71%

Toward Spectral and Energy Efficient 5G Networks Using Relayed OFDM With Index Modulation

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…[ (1,4), (1,5), (1,6), (2,6), (4,5), (2,5), (3,6) [ (2,5), (3,4), (3,6), (4,5), (4,6), (5,6), (3,5), (2,6) Pro.…”

Section: Simulation Resultsunclassified

“…[ (1,2,5), (1,2,4), (1,2,6), (1,4,6), (1,3,5), (1,3,4), (1,5,6), (1,3,6)] → [1, ..., 8] [ (2,3,5), (2,3,4), (2,5,6), (2,3,6), (2,4,5), (3,4,5), (4,5,6), (3,4,6)] → [9, ..., 16] 4 108 160 2.5…”

Section: Simulation Resultsmentioning

confidence: 99%

“…it is obvious that b 4 → I 5 . The mapping set can be updated by Step 5: Find the 5-th IC index for mapping using V 4 I = [1,2,5,7]. According to (31), we have 0, 2, 1, 0, 3, 0, 2], so that we can start at I 6 .…”

Section: Graph Theory Assisted Bit-to-ic Mappingmentioning

confidence: 99%

“…According to (31), we have 0, 2, 1, 0, 3, 0, 2], so that we can start at I 6 . Since [2,1,6,4,7,3,8] and M left = [5].…”

Section: Graph Theory Assisted Bit-to-ic Mappingmentioning

confidence: 99%

See 2 more Smart Citations

Graph Theory Assisted Bit-to-Index-Combination Gray Coding for Generalized Index Modulation

Xiao

Chen

Hemadeh

et al. 2020

IEEE Trans. Wireless Commun.

View full text Add to dashboard Cite

Generalized index modulation (GIM) which implicitly conveys information by the activated indices is a promising technique for next-generation wireless networks. Due to the prohibitive challenge of bit-to-index combination (IC) mapping optimization, conventional GIM system obtains the bit-to-IC mapping table randomly, which may suffer from some performance loss. To circumvent this issue, we propose a low-complexity graph theory assisted bit-to-IC gray coding for GIM systems by minimizing the average hamming distance (HD) between any two ICs having one different value. Specifically, we decompose and transform the optimization problem into two subproblems using the graph theory, i.e., 1) Select an IC set whose corresponding graph has the minimum degree; 2) Design a bit-to-IC mapping principle to minimize the weight of the selected graph. Lowcomplexity algorithms are developed to solve the subproblems with a significant reduced complexity. Both simulation and theoretical results are shown that the GIM systems with our proposed mapping table are capable of providing significant performance gains over the conventional counterparts without the need for any additional feedback-link and without extra computational complexity. It is also shown that the proposed bit-to-IC mapping table is straightforward for any GIM systems over generalized fading channels.

show abstract

To mitigate primary user emulation attack trajectory using cognitive single carrier frequency division multiple access approaches: Towards next generation green IoT

Mazumdar

Gohel

2023

Engineering Reports

View full text Add to dashboard Cite

The growing cognizance of spectrum scarcity has become a more significant concern in wireless radio communications. Due to the exponential growth of data transmission in intelligent wireless sensor networks, energy spectrum detection has become a promising solution for resolving spectrum shortages. Primary user emulation attack (PUEA) has been identified as a significant attack vector in the cognitive radio (CR) domain's physical layer. In comparison, the CR is a promising method to increase spectrum efficiency by allowing unlicensed secondary users (SUs) to access licensed frequency bands without interfering with approved primary users (PUs). The study's primary findings are the methodology for preventing PUEA using authentication tags, which are unique sequences. This research blends SC‐FDMA with CR to protect CR networks from PUEA attacks, a Latin square (LS) matrix tag generation system is proposed to mitigate the PUEA effect. The technology is meant to provide effective authentication and protection against malicious users. In a secured environment, the LS tag technique is utilized to track and estimate the PU. For example, the BER of both techniques is virtually identical between 0 and 4 dB, while the BER performance of the suggested LS tag generation improves with increasing signal‐to‐noise ratio (SNR). As a result, the suggested LS tag generation is less susceptible to PUEA. To diminish the influence of PUEA in CR networks, an efficient enlightening approach for making the future Green Cognitive Radio Wireless networks structure is proposed. The simulation results also demonstrate the resilience of the proposed CR spectrum sensing techniques for energy‐efficient knowledge at varying degrees to reduce the adverse effects of environmental technologies.

show abstract

Opportunistic Spectrum Sharing Based on OFDM With Index Modulation

Cited by 31 publications

References 39 publications

Toward Spectral and Energy Efficient 5G Networks Using Relayed OFDM With Index Modulation

Toward Spectral and Energy Efficient 5G Networks Using Relayed OFDM With Index Modulation

Graph Theory Assisted Bit-to-Index-Combination Gray Coding for Generalized Index Modulation

To mitigate primary user emulation attack trajectory using cognitive single carrier frequency division multiple access approaches: Towards next generation green IoT

Contact Info

Product

Resources

About