Orthogonal frequency division multiplexing with subcarrier power modulation for doubling the spectral efficiency of 6G and beyond networks,Transactions on Emerging Telecommunications Technologies

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Orthogonal frequency division multiplexing with subcarrier power modulation for doubling the spectral efficiency of 6G and beyond networks
Transactions on Emerging Telecommunications Technologies ( IF 2.5 ) Pub Date : 2020-03-11 , DOI: 10.1002/ett.3921
Jehad M. Hamamreh ₁ , Abdulwahab Hajar ₁ , Mohamedou Abewa ₁

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With the emergence of new applications (eg, extended reality [XR] and haptics), which require to be simultaneously served not just with low latency and sufficient reliability, but also with high spectral efficiency, future networks (ie, 6G and beyond) should be capable of meeting this demand by introducing new effective transmission designs. Motivated by this, a novel modulation technique termed as orthogonal frequency division multiplexing with subcarrier power modulation (OFDM‐SPM) is proposed for providing highly spectral‐efficient data transmission with low‐latency and less‐complexity for future 6G wireless communication systems. OFDM‐SPM utilizes the power of subcarriers in OFDM blocks as a third dimension to convey extra information bits while reducing both complexity and latency compared to conventional schemes. In this article, the concept of OFDM‐SPM is introduced and its validity as a future adopted modulation technique is investigated over a wireless multipath Rayleigh fading channel. The proposed system structure is explained, an analytical expression of the bit error rate (BER) is derived, and numerical simulations of BER and throughput performances of OFDM‐SPM are carried out. OFDM‐SPM is found to greatly enhance the spectral efficiency where it is capable of doubling it. In addition, OFDM‐SPM introduces negligible complexity to the system, does not exhibit error propagation, reduces the transmission delay, and decreases the transmission power by half.

中文翻译：

正交频分复用和副载波功率调制，可将6G及更高网络的频谱效率提高一倍

随着新应用程序（例如扩展现实[XR]和触觉）的出现，不仅需要以低等待时间和足够的可靠性同时提供服务，而且还需要以高频谱效率同时提供服务，未来的网络（即6G及更高版本）应该能够通过引入新的有效变速箱设计来满足这一需求。因此，提出了一种新的调制技术，称为正交频分复用和子载波功率调制（OFDM-SPM），旨在为未来的6G无线通信系统提供频谱效率高，时延低，复杂度低的数据传输。与传统方案相比，OFDM-SPM利用OFDM块中子载波的功能作为第三维来传达额外的信息比特，同时降低复杂性和等待时间。在这篇文章中，介绍了OFDM-SPM的概念，并研究了其在无线多径瑞利衰落信道上作为未来采用的调制技术的有效性。解释了所提出的系统结构，导出了误码率（BER）的解析表达式，并对BER和OFDM-SPM的吞吐性能进行了数值模拟。发现OFDM-SPM能够将频谱效率提高一倍，从而极大地提高了频谱效率。此外，OFDM-SPM给系统带来的复杂性可忽略不计，不会出现错误传播，减少了传输延迟，并将传输功率降低了一半。得出误码率（BER）的解析表达式，并对BER和OFDM-SPM的吞吐性能进行了数值模拟。发现OFDM-SPM能够将频谱效率提高一倍，从而极大地提高了频谱效率。此外，OFDM-SPM给系统带来的复杂性可忽略不计，不会出现错误传播，减少了传输延迟，并将传输功率降低了一半。得出误码率（BER）的解析表达式，并对BER和OFDM-SPM的吞吐性能进行了数值模拟。发现OFDM-SPM能够将频谱效率提高一倍，从而极大地提高了频谱效率。此外，OFDM-SPM给系统带来的复杂性可忽略不计，不会出现错误传播，减少了传输延迟，并将传输功率降低了一半。

更新日期：2020-03-11

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