dmt
RSS dmtA Dual-Path TEQ Structure for DMT-ADSL Systems
White Paper Discrete Multitone (DMT) modulation is the industry standard for Asymmetrical Digital Subscriber Loop (ADSL) modems. DMT modulation allows for simplified equalization when the effective duration of the channel memory is shorter that the predefined... [10 Apr 2008]
ADSL2 and ADSL2+: The New ADSL Standards
White Paper The new standards are referred to as "G.dmt.bis" and As the number of users of ADSL chipsets based on first-generation ADSL standards surpasses 25 million, the ITU has completed and approved the newest revision of international ADSL standards. [16 Jul 2007]
The Cyclic Prefix of OFDM/DMT - An Analysis
White Paper This paper addresses the impact of a too short cyclic prefix on multicarrier systems such as Orthogonal Frequency Division Multiplex (OFDM) and Discrete MultiTone (DMT). The main result is that the InterSymbol Interference (ISI) and InterCarrier... [18 Apr 2007]
Peak-to-Average Power Ratio Reduction of OFDM Signals Using Pulse Shaping
White Paper This technique is also very flexible and it can be used for OFDM and Discrete Multi-Tone (DMT) transmissions. This paper proposes an efficient technique for reducing the PAPR of OFDM signals. The proposed technique is very effective and avoids the... [18 Apr 2007]
Frequency Domain Equalization of DMT/OFDM Systems With Insufficient Guard Interval
White Paper This paper proposes a new, generalized approach for equalization of Discrete Multi-Tone (DMT) systems, which not only uses redundancy in the time domain by adding a guard interval, but also takes advantage of existing or intentionally placed... [14 Apr 2007]
Efficient Power Allocation for Coded OFDM Systems
White Paper One of the transmission schemes to overcome the frequency selectivity is Discrete Multi-Tone (DMT). In a DMT system, the bit loading and power level of each subchannel is optimized with the water-filling technique. [11 Apr 2007]
Powerdsine Case Study: Plymouth College of Further Education
White Paper Plymouth College selected the proposal by DMT Communications who proposed a wireless LAN solution from Intel combined with the use of PowerDsine's cutting edge Power over LAN technology. Plymouth College of Further Education has always prided... [09 Feb 2006]
Petersburg Life Reduces Returned Mail by More Than Half
White Paper For assistance in determining the full scope of the problem, the company turned to the expertise of Pitney Bowes DMT. Reducing costs is important for any organization. And one of the best ways to reduce costs is to attack the problem of returned mail. [10 Jun 2005]
Multi-Channel Island: Jersey Post Develops EBPP Solutions
White Paper This is exactly the approach that Pitney Bowes DMT presented to them. Jersey Post is an essential part of the infrastructure of Jersey, providing postal services to all households and businesses on the island. [10 Jun 2005]
The Benefits of Discrete Multi-Tone (DMT) Modulation for VDSL Systems
White Paper Practical wireline and wireless channels present such dispersion and frequency dependency, making DMT and OFDM ideal modulations for such environments. This paper discusses DMT's advantages over QAM from the perspectives of performance, flexibility... [21 Mar 2005]
ADSL Clear EOC Channel Capability
White Paper The capabilities of the Clear EOC Channel are discussed for G.dmt different framing mode as well as ADSL2. Embedded operations channel (EOC) is defined in G.dmt for the retrieval of ATU-R status information, ADSL performance parameters monitor, and... [24 Feb 2005]
Protecting the Robustness of ADSL and VDSL DMT Modems When Applying DSM
White Paper When transmitting data over an ADSL or VDSL link, performance is very important. In order to improve the bit rate that can be achieved over the copper link, a lot of techniques like power backoff (PBO) and dynamic spectrum management (DSM) focus on... [13 Feb 2005]
The Benefits of Discrete Multi-Tone Modulation for VDSL Systems, Part I
White Paper Currently the T1E1 and ITU-T committees have decided to adopt dual line-code standards for VDSL: Multi-carrier modulation (MCM) in the form of discrete multi-tone (DMT) modulation, and single-carrier modulation in the form of quadrature amplitude... [13 Feb 2005]
ADSL Modem
White Paper ADSL modem G.DMT allows approximately 6 Mbps downstream and approximately 640 kbps upstream data rates depending on the deployment and noise environment. VOCAL Technologies, Ltd.modem software libraries include a complete range of ETSI / ITU / IEEE... [13 Feb 2005]
ADSL Line Driver Using Tripath Digital Power Processing (DPP) Technology
White Paper This device accepts differential input signals from an analog front-end (AFE), and can be used in full-rate (G.dmt), or G.lite systems. The TLD4012 is an ADSL line driver that provides very low power consumption and low distortion in a very small... [13 Feb 2005]
