Comparison of coded orthogonal frequency division multiplexing and multicarrier code division multiple access systems for power line communications

Katsis, P. L.; Papadopoulos, G. D.; Pavlidou, Fotini‐Niovi

doi:10.1002/dac.682

Cited by 6 publications

(4 citation statements)

References 15 publications

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“…The STBC scheme applied in our study utilizes two emitting points / antennas and two receiving points/ antennas for the examined channels (hereafter referred to as STBC2x2). The transmission matrix used to produce the space-time encoder and decoder was described in (5). For the PLC application it is essential to use equal number of transmitting and receiving points.…”

Section: System Structure and Analysismentioning

confidence: 99%

“…Reed-Solomon codes, repetition coding, block and convolutional coding are different forward error correction techniques that have been proposed for applications recently [4]. Turbo coding is a fairly new coding technique proposed in [5] for improving the performance of PLC systems. Besides, spacetime coding is a coding-modulation technique for multiple emitting and receiving antennas/points [3], which has been investigated recently in PLC [6]- [8], as well as in satellite communications [9]- [11].…”

Section: Introductionmentioning

confidence: 99%

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Performance of Space-Time Block Coding in Powerline and Satellite Communications

Papaioannou¹,

Papadopoulos²,

Pavlidou³

2005

Journal of Communication and Information Systems

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In this paper Space-Time Block Coding (STBC) is examined in powerline and satellite communications, comparing the gains that this coding-modulation technique provides to these communications systems. The powerline environment is assumed to be a frequency-selective, multipath fading environment with Additive White Class A Noise (AWCN), which is used to model the actual powerline noise characteristics. The satellite channel for urban area, modeled as a combination of Rayleigh and lognormal processes with the presence of Additive White Gaussian Noise (AWGN) is also studied. System efficiency is enhanced by the application of Orthogonal Frequency Division Multiplexing (OFDM), convolutional coding and block interleaving and the performance of different Phase Shift Keying (PSK) modulation schemes under the imposed channel conditions is investigated. The performance of the system is assessed by the commonly used Bit Error Rate (BER) vs. Signal to Noise Ratio (SNR) diagrams and there is also a comparison regarding the throughput efficiency among the examined systems. As stated in the results section, STBC can be used in powerline and satellite communications providing remarkable results, comparable to those in terrestrial wireless communications where STBC is nowadays a rather mature technique.

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Section: System Structure and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance of Space-Time Block Coding in Powerline and Satellite Communications

Papaioannou¹,

Papadopoulos²,

Pavlidou³

2005

Journal of Communication and Information Systems

Self Cite

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“…Because there are heavy electromagnetic radiations caused by the high-frequency signals in BPL, which will result in interferences with other communication equipments, OFDM is also used to share the same frequency band with wireless radio businesses. To implement multi-access, Time Division Multiplexing Access (TDMA), Frequency Division Multiplexing Access (FDMA) and Code Division Multiplexing Access (CDMA) are usually used in BPL [4]. For the purpose of making the frequency resources to be used effectively with good communication reliability and raising the spectral efficiency, a multi-access program for BPL communication is proposed on the basis of Orthogonal Pulse Division Multiplexing Access (OPDMA), Barker-code-based Spectrum Spreading (BSS) and OFDM technology.…”

Section: Introductionmentioning

confidence: 99%

A multi‐access method for BPL based on orthogonal pulse division multiplexing, barker‐code‐based spectrum spreading and orthogonal frequency division multiplexing

Zhang

Lü

Nie

2009

Int J Communication

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SUMMARYA highly efficient multi-access scheme of broadband power line (BPL) communication, named as OFDM-BPS-OPDMA, is proposed based on the Orthogonal Pulse Division Multiplexing Access (OPDMA), Barker-code-based Spectrum Spreading (BSS) and Orthogonal Frequency Division Multiplexing (OFDM) method. The orthogonal pulses are generated by using the eigenvectors of Hermitian matrix. At the same time, a specific pulse will be allocated to every user of the communication system. The transmitting data are first modulated by OFDM. Then, it is processed with OPDMA and BSS. Finally, the data is sent to the power line channel. On the receiving side, the data is processed with BSS demodulation, OPDMA demodulation and OFDM demodulation, and the receiving data for each user is acquired. Because of the orthogonality between these pulses, the multi-user interference could be eliminated; when BSS is used, the waveform restoration is enhanced. Meanwhile, with the help of OFDM, the multi-path interference is mitigated. Particularly, all users can share the resources of time and spectrum without interfering with others, and get excellent reliability in the concerned scheme. When OFDM is used, the sub-carriers may be allocated dynamically, and the legal radio frequency band could be shunned by sharing the common bandwidth with other communication systems.

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“…Ta apotelèsmata pou parousizontai se autì to keflaio dhmosieÔthkan se diejnèc episthmonikì periodikì [KPP04], en¸mèroc aut¸n anakoin¸jhke se sunèdrio [KPP03].…”

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Κωδικοποίηση χωροχρόνου (space-time) σε τηλεπικοινωνιακές ζεύξεις με διαλείψεις

Παπαδόπουλος¹

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To antikeÐmeno thc paroÔsac didaktorik c diatrib c estizetai sth melèth thc kwdiko-poÐhshc qwroqrìnou. Ereuntai h efarmog thc kwdikopoÐhshc aut c sto thlepikoinwniakì kanli tou diktÔou hlektrik c enèrgeiac, afoÔ prohgoumènwc, kai gia thn kalÔterh epopteÐa tou kanalioÔ, èqei diereunhjeÐ h efarmog teqnik¸n pollapl c prìsbashc, sÔgqronwn llwn teqnik¸n kwdikopoÐhshc (metaxÔ twn opoÐwn kai h Turbo kwdikopoÐhsh) kai diafìrwn teqnik¸n diamìrfwshc sto sugkekrimèno kanli, me metr seic tou rujmoÔ sflmatoc bit kai thc rujmapìdoshc twn exetazìmenwn susthmtwn. Sth sunèqeia melettai h apodotikìthta tou sust matoc qwroqrìnou sto eponomazìmeno doruforikì kanli epÐgeiwn kinht¸n epi-koinwni¸n, kai ta apotelèsmata pou exgontai sugkrÐnontai me to asÔrmato epÐgeio kanli topikoÔ diktÔou, to opoÐo kai èqei ekten¸c ereunhjeÐ sth bibliografÐa. Katìpin, epikent-r¸nontac sth mètrhsh thc qwrhtikìthtac kanalioÔ kai sto rujmì sflmatoc bit, parousizontai dÔo antÐstoiqa nw frgmata gia thn kwdikopoÐhsh qwroqrìnou me efarmog se kanlia me logo-kanonikèc kai Rician dialeÐyeic, ta opoÐa apoteloÔn analutikèc majhmatikèc ekfrseic se kleist morf , kai twn opoÐwn h axiopistÐa exetzetai tìso me arijmhtikèc mejìdouc ìso kai me prosomoÐwsh. 'Epeita, proteÐnontai kai efarmìzontai dÔo algìrijmoi ubridik c autìmathc aÐthshc epanekpomp c gia omadikèc epikoinwnÐec sto dÐktuo UMTS, parousizontac polÔ endiafèronta apotelèsmata kai uperter¸ntac ìlwn twn sqetik¸n al-gorÐjmwn pou èqoun protajeÐ mèqri s mera. Tèloc, autoÐ oi algìrijmoi qrhsimopoioÔntai se sunduasmì me mÐa proteinìmenh teqnik kwdikopoÐhshc qwroqrìnou se epÐpedo pakètou, me skopì na emploutisteÐ h apìdosh tou sust matoc ìson afor th mèsh kajustèrhsh kai th rujmapìdosh, epitugqnontac akìmh kalÔtera apotelèsmata.

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Comparison of coded orthogonal frequency division multiplexing and multicarrier code division multiple access systems for power line communications

Cited by 6 publications

References 15 publications

Performance of Space-Time Block Coding in Powerline and Satellite Communications

Performance of Space-Time Block Coding in Powerline and Satellite Communications

A multi‐access method for BPL based on orthogonal pulse division multiplexing, barker‐code‐based spectrum spreading and orthogonal frequency division multiplexing

Κωδικοποίηση χωροχρόνου (space-time) σε τηλεπικοινωνιακές ζεύξεις με διαλείψεις

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