- CNET NETWORKS UK BUSINESS SITES:
- atlarge.com
- BNET UK
- silicon.com
- SmartPlanet.com
- ZDNet.co.uk
347 stories on
Sort by: Date | Relevance
whitepaper 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.
[26 Jul 2005]
whitepaper This paper presents a partial DFT-based modified OFDM system that is resistant to channel nulls, when the channel state information is known to both the transmitter and the receiver. It shows the relationship between this method and filterbank...
[10 Apr 2008]
whitepaper The goal is to evaluate the performance of the turbo coded OFDM (TCOFDM) system for minimum number of decoding iterations. This paper presents an evaluation of the combined use of the Turbo Codes (TC) and the Orthogonal Frequency Division...
[21 Jul 2005]
whitepaper A high rate delayed space-frequency cyclic group code is proposed in this paper, which applies a new bandwidth and power-efficient space-frequency processing on the orthogonal-frequency-division-multiplexing (OFDM) system.
[26 Jul 2005]
whitepaper For low SNR, this paper shows that the conventional OFDM system is the optimal solution and the optimal precoder is the identity matrix. Furthermore, in this case the conventional OFDM system has the largest BER among all OFDM systems with...
[21 Oct 2004]
whitepaper This paper proposes a low complexity Space-Frequency Bit Interleaved Coded (SF-BICM) Multiple-Input Multiple-Output (MIMO) OFDM system as a promising candidate for Next Generation Wireless LANs, expected to operate in excess of 100Mb/s.
[21 Oct 2004]
whitepaper This paper analyzes the performance of OFDM system based on IEEE 802.11a specification. Recently, there are increasing demands among wireless mobile subscribers on the broadband wireless multimedia services with high capacity and reliability.
[29 Oct 2004]
whitepaper The close relationship between the peak factor of a QPSK/OFDM system and the one from a 16-QAM/OFDM system is presented and analyzed. It is shown that a 16- QAM/OFDM system shows larger peaks and is more difficult to analyze unless use is made of...
[11 Apr 2007]
whitepaper In this paper, the design of a base band OFDM system for communication over Low Voltage (LV) power lines is discussed. Such a system is suitable for the development of networks at homes or small offices.
[11 Apr 2007]
whitepaper A highly flexible OFDM system is considered to be a good candidate for the Cognitive Radio baseband processing where individual carriers can be switched off for frequencies occupied by a licensed user.
[11 Apr 2007]
whitepaper This paper proposes combining channel estimation and optimal power allocation approaches for a multiple-antenna orthogonal frequency division multiplexing (OFDM) system in high-speed transmission applications.
[26 Oct 2004]
whitepaper A scenario where the multiple codewords are loaded onto the subcarriers of the OFDM system in parallel is considered. Space-Frequency (SF) group codes are designed for Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO...
[13 Apr 2007]
whitepaper In an OFDM system, various modulation methods can be used in order to encode the binary information. If a differential phase modulation scheme is chosen, data can be encoded in the relative phase of consecutive symbols in each subchannel or in the...
[11 Apr 2008]
whitepaper This paper considers the linear precoded OFDM approach proposed in, where a non-redundant precoding was applied to the symbol blocks before entering the OFDM system. The precoding, while maintained the transmit power, introduced a structure to the...
[21 Jul 2005]
whitepaper OFDM-FDMA systems provide the flexibility to support simultaneous downlink data transmissions to different terminals. It has been shown that hence dynamic OFDM-FDMA systems can improve various transmission metrics such as throughput or required power.
[21 Oct 2004]
whitepaper This paper describes an OFDM based 4G downlink for a wide area coverage and high mobility system. User data are multiplexed and OFDM modulated such that the user with the best predicted channel conditions are always using the channel.
[14 Apr 2007]
whitepaper The new OFDM system has been shown to be approximately MAI-free when there is no CFO. The Carrier Frequency Offset (CFO) effect of a new multiaccess OFDM transceiver is analyzed. Finally, it is demonstrated by simulation that the proposed OFDM...
[13 Apr 2007]
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 analyzes the performances of a concatenated FEC scheme based on Turbo Coded and Reed-Solomon OFDM system for terrestrial broadcasting. The performances is evaluated in terms of bit error rate probability for different constituent codes...
[21 Oct 2004]
whitepaper This paper presents the multiple-input multiple-output (MIMO) capacity results of an orthogonal frequency division multiplexing (OFDM) based system under Ricean fading. It presents the capacity results for the case in which channel state...
[31 Oct 2004]
Sort by: Date | Relevance
Copyright ©1995-2008 CNET Networks, Inc. All rights reserved. Top of page
