ETTC'2003 - SEE
ETTC'2003 - SEE ETTC'2003 - SEE
Multiuser Interference Canceler ” IEEE JSAC Vol 12.No.4.PP605-611,1994. [7] D.S. chen and S.Roy “An adaptive mutineer receiver for CDMA systems” IEEE.JSAC.VOL-12 No.5,pp808-816 . 1994. [8] D.Divsalar,M.K.Simon ,D.Raphoeli .”Improved parallel interface cancellation for CDMA” IEEE.trans on com,VOL.Com-46 pp258-268. 1998。 [9] P.Patel and J.M.Holtzman, “Analysis of a simple successive interface cancellation scheme in a DS/CDMA system” IEEE.JSAC VOL12.NO.5.PP796-807 .1994. [10] T.S. RAppaport, Wireless communication – Principles & practice, Prentice Hall,New Jersey,1996。 [11] C.L.Weber, G.K.Huth and B.H.Batson, “Performance Considerations of Code Division Multiple-access Systems” IEEE Trans on VT,VOL.VT-30,No.1,pp3-10,1981.
BACK Transmission Test Bench Thierry Robert, Christophe Laporte, Francis Gizard, Alain Mallet, Jean-Philippe Taisant CNES - DTS/AE/TTL/TS 18 ave Edouard Belin 31401 Toulouse cedex email : thierry.robert@cnes.fr - tel : 33 (0) 5 61274114 - fax : 33 (0) 5 61282613 1 INTRODUCTION For two years CNES has been developing a bench for transmission satellite systems engineering. This development is performed under ATF (“Atelier Telecom du Futur”) project. The Transmission System Bench (BST) is devoted to determine accurately the performances of the transmission satellite sub-system including all the payload components such as multi-beam antennas, TWTA, Local Oscillators (phase noise template), and including system impairments such as propagation constraints or interference environment. Furthermore, this bench also offers the ability to analyse the impact of a given equipment in "real" operational conditions over end-to-end transmission performances. This paper presents the bench and its components as well as the kind of results that can be obtained through its exploitation. 2 BENCH OVERVIEW Emission Rack Monitoring Module 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 Modulator Controller 15 14 15 14 Controller 15 16 15 14 13 12 11 10 9 8 7 6 5 4 Receive Antenna Matrix 16 15 14 13 12 11 10 9 8 7 6 5 4 15 13 12 11 10 9 8 7 6 5 4 3 2 1 Microwave Chains Interferers 13 12 11 10 9 8 7 6 5 4 3 2 1 15 16 15 14 13 12 11 10 9 8 7 6 5 4 Transmit Antenna Matrix 1 2 3 3 3 2 2 2 1 1 1 Calibrated Noise Generator 2 3 1 Monitoring Module Propagation Channel Emulator Microwave Chain Useful channel Propagation Channel Emulator Monitoring Module 1 3 2 Calibrated Noise Generator Demodulator The BST aims to represent in a very realistic way the satellite transmission of a multimedia satellite system from X to Ka band. This testbed is easily reconfigurable and its operation is facilitated by the availability of friendly man-machine interfaces. The BST operates up to sixteen channels in order to emulate several kind of interferers. It is organised around six sub-systems: 1. Modulated signals generator (QPSK, OQPSK, 16QAM) with varying bit rate from 1.6 kbits/s up to 400 Mbits/s. 2. ACPR (Adjacent Channel Power Ratio) controller, 3. Propagation effects and satellite motion emulator, 4. Satellite receive and transmit antennas emulator, 5. Microwave racks including TWTA, on board processor and phase noise generator. 6. Thermal noise generator.
- Page 358 and 359: comprenant des objets complexes, n
- Page 360 and 361: Cette approche permet, avec les mê
- Page 362 and 363: Les Thèses ONERA UPS Prise en comp
- Page 364 and 365: Pression Ligne bifilaire non blind
- Page 366 and 367: 1.8 1,8 Tension continue V 1.6 1.4
- Page 368 and 369: 270 Ω I0 IL 2,7 kΩ (b) Alimenta
- Page 370 and 371: What is the budget of the statistic
- Page 372 and 373: Monte Carlo approach: This is a thr
- Page 374 and 375: 2 Etat de l’art des standards de
- Page 376 and 377: 2.1.6 Emissions standards 61967 par
- Page 378 and 379: - Limites pour l’immunité DPI (e
- Page 380 and 381: PRESENTATIONS POSTER / POSTER PRESE
- Page 382 and 383: BACK LA TELEMESURE SUR AIRBUS JC GH
- Page 384 and 385: Dans le cycle d ’essais en vol ,
- Page 386 and 387: CONCLUSION - NOS BESOINS FUTURS AIR
- Page 388 and 389: LOGICIELS DE MESURE ET DE TRAITEMEN
- Page 390 and 391: LOGICIELS DE MESURE ET DE TRAITEMEN
- Page 392 and 393: LOGICIELS DE MESURE ET DE TRAITEMEN
- Page 394 and 395: In order to optimize the phase nois
- Page 396 and 397: Photo-oscillator active device Opti
- Page 398 and 399: the inverse of N×N correlation mat
- Page 400 and 401: quasi-synchronous multiuser detecto
- Page 402 and 403: Multiuser Interference Canceler ”
- Page 404 and 405: the inverse of N×N correlation mat
- Page 406 and 407: quasi-synchronous multiuser detecto
- Page 410 and 411: All these sub-systems can be easily
- Page 412 and 413: 3.5 ACPR RACK Gateway and satellite
- Page 414 and 415: 4.2 COMPONENT DEGRADATION MEASUREME
- Page 416 and 417: Indeed, when the objective of the t
- Page 418 and 419: All the five points can be achieved
- Page 420 and 421: M r Mmax (0 dB, -180°) b = 0 a ωc
- Page 422 and 423: 2 - Test devices at ENSICA Souffler
- Page 424 and 425: Soufflerie à Densité Variable (SD
- Page 426 and 427: Capacité : - pour la charge axiale
- Page 428 and 429: Machine d’essai de fatigue en fle
- Page 430 and 431: torsion. - asservissement de chaque
- Page 432 and 433: KEY 1 WORD IENA PACKET format An IE
- Page 434 and 435: TD: “0” means that the paramete
- Page 436 and 437: PARAMETER DESCRIPTION This array de
- Page 438 and 439: BACK UTILISATION de CAMERAS NUMERIQ
- Page 440 and 441: TABLE DES MATIÈRES 1. INTRODUCTION
- Page 442 and 443: 2. CONTEXTE DES ESSAIS Le but des e
- Page 444 and 445: 3. LES BESOINS ET LES CONTRAINTES 3
- Page 446 and 447: 4. CHOIX DE LA CAMERA 4.1 Démarche
- Page 448 and 449: 5.1.4 Adaptations Les deux principa
- Page 450 and 451: Tir d'un missile AIR/AIR éjecté T
- Page 452 and 453: 6. CONCLUSION Cette évaluation mon
- Page 454 and 455: Capteur Intelligent IEEE 1451.4 Pri
- Page 456 and 457: pC/g Piezo Accelerometer mV/g Piezo
Multiuser Interference Canceler ” IEEE JSAC Vol 12.No.4.PP605-611,1994.<br />
[7] D.S.<br />
chen and S.Roy “An adaptive mutineer receiver for CDMA systems”<br />
IEEE.JSAC.VOL-12 No.5,pp808-816 . 1994.<br />
[8] D.Divsalar,M.K.Simon ,D.Raphoeli .”Improved parallel interface cancellation for CDMA”<br />
IEEE.trans on com,VOL.Com-46 pp258-268. 1998。<br />
[9] P.Patel and J.M.Holtzman, “Analysis of a simple successive<br />
interface cancellation scheme in a<br />
DS/CDMA system” IEEE.JSAC VOL12.NO.5.PP796-807 .1994.<br />
[10] T.S. RAppaport, Wireless communication – Principles & practice,<br />
Prentice Hall,New Jersey,1996。<br />
[11] C.L.Weber, G.K.Huth and B.H.Batson,<br />
“Performance Considerations of Code Division<br />
Multiple-access Systems” IEEE Trans on VT,VOL.VT-30,No.1,pp3-10,1981.
Change language