Bandwidth-enhancement of digital communication systems employing narrowband antennas: A novel electromagnetic OFDM approach

Hanoon, Ahmed; Mikki, Said

doi:10.1109/apusncursinrsm.2017.8072306

Cited by 10 publications

(19 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…13 12 Since n(t) is white, this finite-dimensional representation of the noise (which is originally an infinite dimensional signal) will not introduce any error into the decision process [32]. 13 Some applications based on this idea were developed for different systems in [17][18][19], where Orthogonal Frequency Division Multiaccess (OFDM) was integrated with h ant (t) in order to enhance the spectral efficiency of the digital communication link. However, in that case, it was the transmitting side what was mainly modified (through OFDM technology) in [18], not the receiver side as proposed here.…”

Section: (B) Application Ii: Optimum Receiver Design For M-ary Digitamentioning

confidence: 99%

“…13 Some applications based on this idea were developed for different systems in [17][18][19], where Orthogonal Frequency Division Multiaccess (OFDM) was integrated with h ant (t) in order to enhance the spectral efficiency of the digital communication link. However, in that case, it was the transmitting side what was mainly modified (through OFDM technology) in [18], not the receiver side as proposed here. the approaches are complementary and can be further combined in one system jointly dividing the overall design load between the Tx and Rx in order to take into account the dynamic structure of the propagation channel.…”

Section: (B) Application Ii: Optimum Receiver Design For M-ary Digitamentioning

confidence: 99%

“…Therefore, when two antennas (Tx and Rx) are placed next to each other, the individual Tx and Rx ACGFs used in formulae like those to be derived in this paper already account in full for the impact of mutual coupling between antennas, regardless to separation and distance between the coupled elements. This was demonstrated by good computational and experimental results in works like [14,15,20,21,25], mostly in the frequency domain; while some results in the time domain were given in [18,19], more data will be provided in §4a.The purpose of the present work is to explore several applications of the recently introduced ACGF approach [7-25] for communication systems research at a very general and fundamental level. The intention here is investigating new methods for performing wireless communication when the impact of the antenna on the digital link performance is explicitly taken into account.…”

mentioning

confidence: 95%

“…These ideas, to be developed rigorously in this paper, are fundamental and very general; hence, they are expected to play a role in future wireless communication systems like mmWave massive MIMO where the interplay between electromagnetics, circuits and signal processing is becoming clearer and the field more multidisciplinary than before [6]. For some more recent applications of the electromagnetic approach to digital communications, see [18,19,25].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The antenna spacetime system theory of wireless communications

Mikki

2019

Proc. R. Soc. A.

Self Cite

View full text Add to dashboard Cite

A general deterministic spacetime system theory of antennas suitable for the analysis and design of wireless communication links is rigorously developed using the recently introduced antenna current Green's function formalism. We provide the first complete derivation of the antenna spatio-temporal response to a delta source using only electromagnetic Green's functions, effectively eliminating all field and current distributions in the final expressions. While the theory works well in both space and time, it puts into sharper focus how the spatio-temporal structure of electromagnetic processes imposes restrictions on the signal processing capabilities of antenna systems by constraining the allowable mathematical form of the effective impulse response of the global wireless communication link. It is shown that the antenna current Green's functions of both the receive and transmit terminals, plus the propagation environment Green's functions, are the only quantities needed to obtain the single input-single output link response function in closed form. One of the results deduced from the theory is that an exact impulse response cannot be ascribed to an arbitrary antenna in general, but may be approximated for many applications. The theory can be deployed for future antenna systems research to boost up spectral efficiency (without increasing physical bandwidth) by directly incorporating electromagnetic knowledge into the design of the communication system's signal processing functions.royalsocietypublishing.org/journal/rspa Proc. R. Soc. A 475: 20180699 treated in parallel [1][2][3][4][5][6][7]. For example, some recent book-length treatments of such interdisciplinary topic appear to address issues pertinent to a unified electromagnetic/communicationtheoretic formalism [5][6][7]. Several research articles have also been published in this domain, e.g. see [2,3] (a non-exhaustive list; however, see [5] for an extensive literature on electromagnetic information theory). Owing to the increasing complexity of 5G and other future communication systems, it is no longer possible to separate the study of the physical layer to purely signal processing and purely electromagnetic parts. Indeed, each process is now expected to feed on the other, and for that reason, there is a need to reexamine the subject at the broadest and most comprehensive theoretical level possible, especially in light of some recent advances in fundamental research. As a step toward this goal, the antenna current Green's function (ACGF) [7] was recently introduced as a frequency-domain spatial transfer function method capable of providing an alternative approach to applied electromagnetics more in line with signal processing and communication theory [8,9]. The ACGF formalism is a complete exact electromagnetic generalization of the idea of the 'impulse response' of antenna systems. It was formulated recently in [7-25] using a hybrid approach incorporating functional analysis, distribution theory, differential geometry into electromagnetic theory. Although t...

show abstract

Section: (B) Application Ii: Optimum Receiver Design For M-ary Digitamentioning

confidence: 99%

Section: (B) Application Ii: Optimum Receiver Design For M-ary Digitamentioning

confidence: 99%

mentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The antenna spacetime system theory of wireless communications

Mikki

2019

Proc. R. Soc. A.

Self Cite

View full text Add to dashboard Cite

show abstract

“…This formulation is more natural because it allows a uniform treatment of a wider class electromagnetic problems as input-output systems with the same signal type present at both the excitation and response "terminals": i.e., electromagnetic fields [1]. Applications of the ACGF method in engineering spans topics like mutual coupling analysis [17], mutual coupling compensation [18][19][20], fast EM computation of large system [21][22][23], alternative methods to compute the near-field response [24], and wireless communications [25][26][27] (more applications are discussed in [1].) Most research has been focusing so far on applications with little emphasis on the theoretical, physical, and mathematical foundations, especially for general radiating systems.…”

Section: Introductionmentioning

confidence: 99%

Generalized Current Green's Function Formalism for Electromagnetic Radiation by Coupled Conducting-Dielectric Systems

Mikki¹

2020

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

Spectral efficiency enhancement using an antenna‐based orthogonal frequency division multiaccess technique

Mikki

Hanoon

2020

Int J RF Microw Comput Aided Eng

Self Cite

View full text Add to dashboard Cite

An approach to enhance antenna spectral efficiency is proposed based on combining spacetime electromagnetic (EM) models of Tx/Rx antennas with orthogonal frequency division multiaccess (OFDM), leading to the EM-OFDM, a technology capable of removing intersymbol interference (ISI) in high-data rate communication links caused by the EM-induced distortion antenna effects. The proposed approach differs from traditional OFDM in wireless communication in several aspects. First, the technique suggests a new decoupling approach by treating each given antenna transreceive device pair as a "stand-alone channel" with its own distortion mechanisms considered separately from the propagation channel. Moreover, the deterministic distortion caused by the nonflat pure antenna EM filtration effects is exploited to carefully design a specialized OFDM transmission techniques based on the antenna parameters, not the multipath fading channels often invoked in conventional uses of OFDM methods. (The EM-OFDM, however, can be combined with a traditional OFDM later if fading channels are present.) In this manner, a more efficient implementation of the wireless link equalization strategy may be enacted since the EM antenna origin of ISI is very different from the traditional propagation channel one. As a proof

show abstract

Bandwidth-enhancement of digital communication systems employing narrowband antennas: A novel electromagnetic OFDM approach

Cited by 10 publications

References 0 publications

The antenna spacetime system theory of wireless communications

The antenna spacetime system theory of wireless communications

Generalized Current Green's Function Formalism for Electromagnetic Radiation by Coupled Conducting-Dielectric Systems

Spectral efficiency enhancement using an antenna‐based orthogonal frequency division multiaccess technique

Contact Info

Product

Resources

About