orthogonal
RSS orthogonalOrthogonal-Coded Selective Mapping (OCSM) for OFDM Peak-to-Average Power Reduction Without Side Information
White Paper This paper elaborates on a new technique for Peak to Average Power (PAP) Control in Orthogonal Frequency Division Multiplexing (OFDM) Systems. The PAP levels are particularly problematic for Software Defined Radio (SDR) platforms, which must... [11 Apr 2007]
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... [29 Oct 2004]
Orthogonal Frequency Division Multiplexing Based on Offset QAM
White Paper One of the factors determining the performance of wireless Orthogonal Frequency Division Multiplexing (OFDM) systems is time-frequency localization of the transmitter and receiver pulse shaping filters. [28 Mar 2005]
Orthogonal Array: Applicability in Software Product Testing
White Paper Orthogonal Array and ideas from the Design of Experiments (DOE) help in improving the software product testing. Orthogonal Array and ideas from the Design of Experiments (DOE) help in improving the Software product testing. [28 Nov 2006]
Orthogonal Striping and Mirroring in Distributed RAID for I/O-Centric Cluster Computing
White Paper The advantage of RAID-x comes mainly from its orthogonal striping and mirroring (OSM) architecture. The bandwidth is enhanced with distributed striping across local and remote disks, while the reliability comes from orthogonal mirroring on local... [24 Feb 2004]
High-Throughput, High-Performance OFDM Via Pseudo-Orthogonal Carrier Interferometry Coding
White Paper OFDM (Orthogonal Frequency Division Multiplexing) is susceptible to poor probability of error performance in fading channels. To enhance OFDM's performance, many architectures utilize channel coding. The addition of coding, adds both redundancy and... [16 Oct 2004]
Clustering Large Databases With Numeric and Nominal Values Using Orthogonal Projections
White Paper Orthogonal partitioning Clustering (O-Cluster) was originally introduced as a fast, scalable solution for large multidimensional databases with numeric values. O-Cluster uses a top-down partitioning strategy based on orthogonal projections to... [06 Nov 2007]
A Bandwidth Efficient Modulation Scheme Using Quasi-Orthogonal Sequences
White Paper A novel modulation scheme using quaternary quasi-orthogonal sequences as M-ary modulation symbols is proposed. High bandwidth efficiency and quasi-orthogonality between the modulation symbols allows to increase the normalized data rate with little... [11 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... [26 Jul 2005]
Channel-Independent Synchronization of Orthogonal Frequency Division Multiple Access Systems
White Paper In this paper synchronization algorithms for both the downlink and the uplink of quasi-synchronous and asynchronous orthogonal frequency division multiple access systems is developed. Unlike existing alternatives, the proposed time- and carrier... [26 Jul 2005]
Reducing Collisions Between Bluetooth Piconets by Orthogonal Hop Set Partitioning
White Paper This paper proposes a novel orthogonal hop set partitioning (OHSP) scheme aimed at reducing the collisions between piconets at the hop level, by partitioning the original Bluetooth hop band into five orthogonal sub-hop sets. [20 Sep 2005]
Characterizing Achievable Rates in Multi-Hop Wireless Mesh Networks With Orthogonal Channels
White Paper This paper considers the problem of determining the achievable rates in multi-hop wireless mesh networks with orthogonal channels. The authors classify wireless networks with orthogonal channels into two types, half duplex and full duplex, and... [12 Dec 2006]
Techniques for the Refinement of Orthogonal Graph Drawings
White Paper Current orthogonal graph drawing algorithms produce drawings which are generally good. However, many times the quality of orthogonal drawings can be significantly improved with a postprocessing technique, called refinement, which improves aesthetic... [24 Feb 2004]
The MAI Performance of Orthogonal Codes for Channel Cover in Asynchronous CDMA System
White Paper Hence, the comparison of MAI performances of walsh sequence with other three Orthogonal sequences as a channel cover code in DS-CDMA was established. It is widely believed that the walsh code is the best to provide covering for a CDMA channel due... [26 Jul 2005]
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. [29 Oct 2004]
