division multiplexing
A "Range-Bandwidth Per Joule" Comparison for UWB and OTDM Waveforms
White Paper As a result of the research around Orthogonal Time Division Multiplexing (OTDM) modulation, some conclusions have been obtained. This technical paper is based on another previous paper from Multispectral Solutions, Inc, published in 1998 and... [10 Jul 2008]
Gigabit Ethernet Technology and Services
White Paper Optical wavelength division multiplexing and transmission equipment that carry Gigabit Ethernet, and 10 Gigabit Ethernet in the future, directly over optical wavelengths are becoming available. Gigabit Ethernet connectivity from the user directly... [10 Jul 2008]
QoS Recovery Schemes Based on Differentiated MPLS Services in All-Optical Transport Next Generation Internet
White Paper Given this increasing demand for high bandwidth Internet with QoS assurances in the coming years, an IP/MPLS-based control plane combined with a wavelength-routed Dense Wavelength Division Multiplexing (DWDM) optical network is seen as a very... [10 Jul 2008]
Deploying CWDM to Overcome Bandwidth Limitations of FTTH Access Networks
White Paper As networks grow in terms of geographic reach, subscriber counts and the scope and number of services offered, Coarse Wave Division Multiplexing (CWDM) has clearly become the preferred method for increasing the bandwidth of these optical access... [08 Jul 2008]
Scalable Video Transmission Over Orthogonal Frequency Division Multiplexing Wireless Channels
White Paper In this paper a wireless system for video transmission over Orthogonal Frequency Division Multiplexing (OFDM) systems is optimized. A frequency-selective Rayleigh fading channel is assumed. Block transmissions using a cyclic prefix are used to... [03 Jul 2008]
Frequency Domain IQ Imbalance Correction Scheme for Orthogonal Frequency Division Multiplexing (OFDM) Systems
White Paper This paper describes the sources and the effect of the IQ imbalance as well as a new method for correcting the error due to the imbalance in Orthogonal Frequency Division Multiplexing (OFDM) systems. Future, high bit rate communication systems... [03 Jul 2008]
Antenna Selection for Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing Systems
White Paper This paper addresses the problem of transmit antenna selection for multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems employing spatial multiplexing. The capacity of a wireless communication system can be... [03 Jul 2008]
Physical Layer Implementation and Evaluation of Multiple Input Multiple Output - Orthogonal Frequency Division Multiplexing (MIMO-OFDM) System
White Paper This paper introduces a physical layer implementation and some test results for the multiple input multiple output - orthogonal frequency division multiplexing (MIMO-OFDM) fast prototype system for the fourth generation mobile communication. [03 Jul 2008]
Wideband Orthogonal Frequency Division Multiplexing (W-OFDM)
White Paper Multiplexing (OFDM)has been successfully applied to a wide variety of digital communications applications over the past several years and has been adopted as the wireless LAN standards. Orthogonal Frequency Division [03 Jul 2008]
Orthogonal Frequency-Division Multiplexing in Wireless Communication Systems With Multimode Fiber Feeds
White Paper The performance of coded orthogonal frequency-division multiplexing (OFDM) for a variety of multimode fiber profiles, including stepped index and á-profile graded index fibers, is assessed. The feasibility of using multimode fiber as an inexpensive... [03 Jul 2008]
Implementation of Orthogonal Frequency Division Multiplexing Modem Using Radix-N Pipeline Fast Fourier Transform (FFT) Processor
White Paper In this paper, a new Radix-N pipeline fast Fourier transform (FFT) processor for the implementation of IEEE 802.11a baseband orthogonal frequency division multiplexing (OFDM) modem for wireless local area network (WLAN) is proposed. [03 Jul 2008]
Orthogonal Frequency Division Multiplexing for Hiperlan 2
White Paper This paper presents the basics of OFDM modulation as used in Hiperlan/2. The advantages of OFDM over TDMA and FDMA are discussed and the implementation of OFDM through Inverse Fast Fourier Transform (IFFT) in the discrete domain is described. [03 Jul 2008]
Software Radio Implementation of Carrier Offset Estimation for OFDM Communications With Multipath
White Paper Orthogonal Frequency Division Multiplexing (OFDM) communications transforms frequency selective channels into multiple low rate subchannels robust against frequency selective fading. This paper describes the implementation and verification of a... [03 Jul 2008]
Wideband Orthogonal Frequency Multiplexing (W-OFDM)
White Paper Multiplexing, then Frequency Division and then Orthogonal. Multiplexing)is a method of using many carrier waves instead of only one, and using each carrier wave for only part of the message. OFDM (Orthogonal Frequency Division [03 Jul 2008]
Introducing DWDM
White Paper The following discussion provides some background on why dense wavelength division multiplexing (DWDM) is an important innovation in optical networks and what benefits it can provide. We then examine the differences between traditional time... [03 Jul 2008]
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