- CNET NETWORKS UK BUSINESS SITES:
- atlarge.com
- BNET UK
- silicon.com
- SmartPlanet.com
- ZDNet.co.uk
567 stories on
Sort by: Date | Relevance
whitepaper Orthogonal Frequency Division Multiplexing OFDM), which is a multicarrier modulation scheme, splits high data rate information symbols into lower rate parallel data streams and transmits this parallel information on different orthogonal carriers.
[11 Apr 2008]
whitepaper High peak-to-average power ratio (PAR) of the transmitted signal is one of the limitations to using orthogonal frequency-division multiplexing (OFDM) systems. This paper presents a novel orthogonal projection-based partial transmit sequences...
[10 Apr 2008]
whitepaper Orthogonal frequency division multiplexing (OFDM) is a special case of multicarrier transmission, where a single datastream is transmitted over a number of lower rate subcarriers. In July 1998, the IEEE standardization group decided to select OFDM...
[10 Apr 2008]
whitepaper In this paper, the potential of orthogonal frequency-division multiplexing-code-division multiplexing (OFDM-CDM) combined with the pre-equalization is investigated. The code-division multiplexing (CDM) component within an orthogonal frequency...
[10 Apr 2008]
whitepaper Orthogonal frequency division multiplexing (OFDM) is a promising technique for multi-antenna broadband systems, since it significantly reduces receiver complexity by providing orthogonal sub-channels.
[10 Apr 2008]
whitepaper Multiuser orthogonal frequency division multiplexing (MU-OFDM) is a promising technique for achieving high downlink capacities in future cellular and wireless LAN systems. The sum capacity of MU-OFDM is maximized when each subchannel is assigned to...
[10 Apr 2008]
whitepaper Multiple transmit and receive antennas can be used with orthogonal frequency division multiplexing to improve performance and transmission rate. This paper investigates trade offs between different techniques in broadband OFDM-based MIMO systems...
[10 Apr 2008]
whitepaper This paper describes Orthogonal Frequency Division Multiplexing (OFDM) and its application to mobile communications. OFDM is a modulation and multiple access technique that has been explored for over 20 years.
[10 Apr 2008]
whitepaper This paper studies multiuser orthogonal frequency division multiplexing (OFDM) system using adaptive subchannel and power allocation with partial channel information. Previous research on multiuser OFDM includes margin adaptive (MA) optimization...
[10 Apr 2008]
whitepaper This paper considers the performance degradation of a high QAM orthogonal frequency division multiplexing (OFDM) system over frequency selective time-varying fading channels. The time variation of the channel during one OFDM frame destroys the...
[10 Apr 2008]
whitepaper This paper presents the design of an efficient low complexity orthogonal frequency division multiplexing receiver targeting wireless local area networks. The focus is on mitigation of the residual frequency synchronization error and sampling...
[10 Apr 2008]
whitepaper The combination of multiple-input multiple-output (MIMO) signal processing with orthogonal frequency division multiplexing (OFDM) is regarded as a promising solution for enhancing the data rates of next-generation wireless communication systems...
[10 Apr 2008]
whitepaper This paper studies the uplink performance of an orthogonal frequency division multiplexing (OFDM) wireless system where multiple antennas are utilized at the base station (BS). Further, capacity can be greatly enhanced through spatial division...
[10 Apr 2008]
whitepaper The combination of Multiple-Input Multiple-Output (MIMO) signal processing with Orthogonal Frequency Division Multiplexing (OFDM) is regarded as a promising solution for enhancing the data rates of next generation wireless communication systems...
[10 Apr 2008]
whitepaper A class of Orthogonal Frequency Division Multiplexing - Continuous Phase Modulation (OFDM-CPM) signals is introduced in which binary data sequence is mapped to complex symbols using the concept of correlated phase states of a CPM signal.
[10 Apr 2008]
whitepaper This paper proposes a new diversity technique for broadband wireless access systems that uses orthogonal frequency division multiplexing (OFDM) and describes its performance. This technique consists of two components.
[10 Apr 2008]
whitepaper Most systems rely on the use of Orthogonal Frequency Division Multiplexing (OFDM) because of its capability to elegantly cope with multi-path interference. In recent years, wireless indoor networks have received a lot of scientific and industrial...
[10 Apr 2008]
whitepaper In this paper a new approach is presented to alleviate the undesirable effects due to the high peak-to-average power ratio of orthogonal frequency division multiplexing. A class of signaling called OFDM angle modulation is presented.
[10 Apr 2008]
whitepaper In communications systems using orthogonal frequency division multiplexing (OFDM), the Fourier transform of the data sequence is transmitted which leads to high peak-to-average power ratios creating implementational difficulties.
[10 Apr 2008]
whitepaper For wireless Local Area Network (LAN) the standards have chosen orthogonal frequency division multiplex (OFDM) as modulation scheme. Future wireless applications target multimedia and high-speed internet access, all requiring techniques to improve...
[10 Apr 2008]
Sort by: Date | Relevance
Copyright ©1995-2008 CNET Networks, Inc. All rights reserved. Top of page
