bandwidth efficient modulation formats for digital fiber transmission systems

... Performance Analysis for Trellis-Coded Unitary Space-Time Modulation To propose a good trellis coding scheme for the USTM, it is necessary to find the key parameters that affect the BEP performance ... Differential Unitary Space-Time Modulation 5.1 Background 5.2 Decision Metric for ML Sequence Decoding of TC-DUSTM 5.3 Performance Analysis for the TC-DUSTM ... Subset-pairing for 8PSK 45 3.2 Subset-pairing for Φ16 (T = 4, M = 2, R = 1) 46 3.3 Subset-pairing for Φ16 (T = 3, M = 1, R = 1.33) 50 3.4 Subset-pairing for...

Ngày tải lên: 11/09/2015, 14:38

... additional information, that is, a formal model for the architecture template as well as mapping constraints for the actors of the SysteMoC application All these information are captured in a formal ... generator for FPGA-based SoC platforms In our following case study, we specify the system generation flow for Xilinx FPGA platforms only Figure shows the general flow for Xilinx platforms The architecture ... EXPLORATION FOR DIGITAL SIGNAL PROCESSING SYSTEMS Given an executable signal processing network specification written in SysteMoC, we can perform an automatic design space exploration (DSE) For this...

Ngày tải lên: 22/06/2014, 19:20

... mm-wave radio transmission requires a microcell or picocell which brings forth the needs for a large number of remote antenna BSs within a small geographical area [19-21] Therefore, to make it ... and low-cost CO and remote nodes for mm-wave fiber- radio networks, which also improves the overall link performance by 13 Chapter 1: Introduction enhancing the modulation depth indices of the ... anymore My very special thanks here again for A/Prof Nirmalathas, who came up and organised funding for my work from their ARC Discovery Project (#0452223) for the extended candidature period I would...

Ngày tải lên: 06/08/2014, 00:21

... between modulation and detection performance and, therefore, EAT of this kind effectively allows only half duplex transmission, instead of full duplex transmission [76-77] However, fullduplex transmission ... is adjusted for optimum modulation while the second wavelength for optimum detection performance The dual light-wave technique enables full-duplex transmission with optimum device performance The ... providing an intermediate bias, where the performance of the EAT is a trade off between the modulation and detection performance [78] In order to realise efficient modulation and photodetection together...

Ngày tải lên: 06/08/2014, 00:21

... network for mmwave fibre-radio systems feeder networks in mm-wave fibre-radio systems may surprisingly increase the capacity of the systems by supporting huge number of BSs required for future ... carrier even for lower optically modulated microwave signals (3 GHz microwave), irrespective of optical modulation formats The difference in a typical OSSB+C modulated optical mmwave signal before and ... F Schmidt, and G Walf, Fiber- optic millimeterwave generation at 64 GHz and spectral efficient data transmission for mobile communications,” Proc Conference on Optical Fiber Communication (OFC'98),...

Ngày tải lên: 06/08/2014, 00:21

... OPTICAL INTERFACE FOR SIMPLIFIED ANTENNA BASE STATIONS 3.1 Introduction In mm-wave fibre-radio systems multiple remote antenna base stations (BSs), suitable for untethered connectivity for the broadband ... characteristic curves for 87 Chapter 3: WDM Optical Interface for Simplified Antenna Base Stations (a) (b) (c) d) Fig 3.7: Measured transmission and reflection responses for the FBGs used in the ... - (b): for double-notch FBG (FBG1), and (c) - (d): for single-notch FBG (FBG2) FBG1 show the nominal Bragg wavelengths for the notches are 1556.305 nm and 1556.624 nm with a 3-dB notch-bandwidth...

Ngày tải lên: 06/08/2014, 00:21

... “Millimetre-wave (39 GHz) fiber- wireless transmission of broadband multichannel compressed digital video,” Electron Lett., vol 32, pp 474-476, 1995 [21] J J O'Reilly, “Performance considerations for MM-wave ... phase-shifted FBGs for fiber- radio systems, ” J Lightwave Technol., vol 21, pp 32-39, 2003 [67] C Marra et al., “OADM with a multiple phase-shifted FBG for a wavelength-interleaved millimeter-wave fiber- radio ... D.Wake, D G Moodie, D D Marcenac, L D.Westbrook, D.Nesset, “Novel techniques for high-capacity 60-GHz fiber- radio transmission systems, IEEE Trans Microwave Theory Tech., vol 45, no 8, pp 1416-1423,...

Ngày tải lên: 06/08/2014, 00:21

... WOI, which forms the ring under investigation This section also uses the terms ‘BS’ and ‘WOI’ for similar meaning For simplicity, all the fibre spans are considered to be equal having a transmission ... carriers for the upstream transmission 4.6 Performance Improvement of Fibre-Radio Links Incorporating Modification in WDM Optical Interface Millimetre-wave fibre-radio system, a wideband transmission ... the performance of wide bandwidth intensity modulators, used in superimposing mm-wave signals onto optical carriers, are also limited by very narrow linear characteristics Therefore, modulation...

Ngày tải lên: 06/08/2014, 00:21

... suitable multiplexers for WI-DWDM mm-wave fibre-radio systems A novel wavelengthinterleaved-multiplexer (WI-MUX) with the mechanism for enhancing modulation depth indices for such systems is presented ... microwave fiber- optic link efficiency,” Electron Lett., vol 30, pp 1965-1966, 1994 [22] C Lim, M Attygalle, A Nirmalathas, D Novak, and R Waterhouse, “Optimum modulation depth for performance ... 2000 [31] D Castleford, A Nirmalathas, and D Novak, “Impact of optical crosstalk in fiber- radio systems incorporating WDM,” IEEE Top Meet On Microwave Photonics (MWP '00), Oxford, UK, pp 51-54,...

Ngày tải lên: 06/08/2014, 00:21

... voltage for the DE-MZM was selected for quadrature operation Therefore, the resultant output of the DE-MZM was an OSSB+C modulated signal comprise the three optical carriers and their respective modulation ... 5.12 shows the measured bit error ratio (BER) curves for the recovered signal for the back-to-back case (having the AWG, but no fibre) and after transmission over 10 km of SMF The result exhibits ... the overall link performance by 7.2 dB From the BER curves it can also be seen that, the sensitivity of the signal for the first LB is improved by approximately dB, whereas for the third loop-back...

Ngày tải lên: 06/08/2014, 00:21

... sideband with carrier (ODSB+C) modulation format by applying standard external modulation techniques, whereas the RF signal was generated in OSSB+C modulation format, for which the necessary operating ... FBGs for fiber- radio systems, ” J Lightwave Technol., vol 21, no 1, pp 32-39, 2003 [33] C Marra et al., “OADM with a multiple phase-shifted FBG for a wavelength-interleaved millimeter-wave fiber- radio ... F Schmidt, and G Walf, Fiber- optic millimeter-wave generation at 64 GHz and spectral efficient data transmission for mobile communications,” Proc Conference on Optical Fiber Communication (OFC'98),...

Ngày tải lên: 06/08/2014, 00:21

... RF modulation scheme in Gbit/s millimeter-wave wireless -fiber networks,” in Proc MWP'00 Oxford, U.K., pp 168-171, 2000 [20] T Kamisaka, T Kuri, and K Kitayama, “Simultaneous modulation and fiber- optic ... Lim, Masuduzzaman Bakaul, Dalma Novak, Rod B Waterhouse, Efficient Transmission Scheme for AWG-based DWDM Millimeter-Wave FiberRadio Systems to be submitted to IEEE Photonics Technology Letters ... millimeter-wave fiber transmission system at 60 GHz-band,” IEEE MTT-S Int Microwave Symposium Digest, vol.2, pp 1011-1012, 2000 [14] M A Al-mumin and G Li, “WDM/SCM optical fiber backbone for 60 GHz...

Ngày tải lên: 06/08/2014, 00:21

... (SER) and BER expressions for three 4-ary modulation formats, i.e., QPSK, pulse –19– Study on Advanced Modulation Formats in Coherent Optical Communication Systems amplitude modulation (PAM), and ... on Advanced Modulation Formats in Coherent Optical Communication Systems Chapter Performance Analysis of 4-Point Modulation Formats In Section 1.2, we reviewed the coherent detection systems and ... different advanced modulation formats in systems which include not only AWGN noise but also linear phase noises –3– Study on Advanced Modulation Formats in Coherent Optical Communication Systems Generally,...

Ngày tải lên: 09/09/2015, 10:15

... Bandwidth- Efficient Digital Modulation with Application to Deep - Space Communications Marvin K Simon MONOGRAPH DEEP–SPACE COMMUNICATIONS AND NAVIGATION SERIES Bandwidth- Efficient Digital Modulation ... Techniques for Deep-Space Navigation C L Thornton and J S Border Formulation for Observed and Computed Values of Deep Space Network Data Types for Navigation Theodore D Moyer Bandwidth- Efficient Digital ... small bandwidth The purpose of this monograph is to define, describe, and then give the performance (power and bandwidth) of digital communication systems that incorporate a large variety of the bandwidth- efficient...

Ngày tải lên: 03/07/2014, 21:12

... growth of digital marketing as an increasingly effective, trusted medium for marketers and Internet users Objectives for Guidelines Define voluntary use guidelines for digital marketing formats ... tailoring easier since formats are interchangeable among sites • Allows measurement and comparison of effectiveness between defined formats Methodology Survey of sizes and formats in regular usage ... the ADMA with a platform to promote and showcase effective options and formats available to digital marketers * Double Byte Character Sets require more than one byte of information to express...

Ngày tải lên: 14/03/2014, 19:20

... growth of digital marketing as an increasingly effective, trusted medium for marketers and Internet users Objectives for Guidelines Define voluntary use guidelines for digital marketing formats ... tailoring easier since formats are interchangeable among sites • Allows measurement and comparison of effectiveness between defined formats Methodology Survey of sizes and formats in regular usage ... the ADMA with a platform to promote and showcase effective options and formats available to digital marketers * Double Byte Character Sets require more than one byte of information to express...

Ngày tải lên: 28/06/2014, 12:20

... growth of digital marketing as an increasingly effective, trusted medium for marketers and Internet users Objectives for Guidelines Define voluntary use guidelines for digital marketing formats ... tailoring easier since formats are interchangeable among sites • Allows measurement and comparison of effectiveness between defined formats Methodology Survey of sizes and formats in regular usage ... the ADMA with a platform to promote and showcase effective options and formats available to digital marketers * Double Byte Character Sets require more than one byte of information to express...

Ngày tải lên: 28/06/2014, 18:20

... TECHNOLOGY AND ENGINEERING Binh Minh Nguyen EFFICIENT CORE SELECTION FOR MULTICAST ROUTING IN MOBILE AD HOC NETWORKS GRADUATION THESIS Faculty of Information Technology Supervisor: Dr Dai Tho ... protocol for multicast routing in mobile ad hoc networks, such as PUMA, ODMRP or MAODV In those protocols, PUMA (Protocol for unified multicasting through announcements) has shown to outperform others ... Language Peer-to-MANET Protocol Independent Multicast Protocol for unified multicasting through announcement Requests for Comments Reverse Path Forwarding Sparse Mode Shortest Path First Shortest Path...

Ngày tải lên: 23/11/2012, 15:03

... operators For example, for a problem with (n, p) = (100, 20), the algorithm terminates if 448 successive children fail in improving the best solution (For all of our test problems, we had n > 2p √ For ... effort ADE is very fast with an average per-replication time of 18.4 seconds for the 40 test problems The per-replication times range from 0.1 seconds for (n, p) = (100, 5) to 2.2 minutes for ... could improve the performance on some problems by slowing down convergence We made no effort to customize the algorithm to the problems on hand, and used the same formulas for the population size...

Ngày tải lên: 08/08/2013, 08:38