symbol multipath
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Linear Constellation Precoding for OFDM With Maximum Multipath Diversity and Coding Gains
White Paper However, OFDM's performance suffers from the loss of multipath diversity, and the inability to guarantee symbol detectability when channel nulls occur. Orthogonal frequency-division multiplexing (OFDM)... [10 Apr 2008]
Robust Timing Synchronization for OFDM Based Wireless LAN System
White Paper The proposed algorithm can robustly detect the symbol boundary even under low SNRs, high frequency offset, and multipath. In this paper, a robust and efficient frame detection and symbol... [10 Apr 2008]
Detection of OFDM-CPM Signals Over Multipath Channels
White Paper Multipath channel with AWGN is assumed. Canonical optimum and suboptimum multiple-symbol-observation OFDM-CPM receivers are derived. A class of Orthogonal Frequency Division Multiplexing - Continuous... [10 Apr 2008]
A RAKE Receiver With ICI/ISI Equalizer for CCK Wireless LAN Modem
White Paper As the delay spread is larger, Inter-Symbol Interference (ISI) and Inter-Chip Interference (ICI) generated due to multipath environments are increased. This paper proposes a new type of RAKE receiver for... [06 Dec 2007]
Mobile Terminal Positioning Using Data Symbols to Mitigate the Influence of Noise in Multi Carrier Modulation
White Paper However, the accuracy of the detected location is not always sufficient in a multipath fading channel, since the received Signal-to-Noise power Ratio (SNR) of the desired first path sometimes becomes low. [18 Apr 2007]
A Multipath Interference Canceller for OFDM Signal Transmission
White Paper Because OFDM offers a very good way to minimize inter-symbol-interference under multi-path conditions, it seems to be the primary choice of modulation method for future packet transmission systems. This advantage though... [14 Apr 2007]
Blind Channel Estimation for OFDM Systems Based on Non-Redundant Linear Precoding
White Paper This paper considers a novel approach that can be applied on a single transmit/receive antenna OFDM system, to increase multipath diversity, and at the same time, enable blind channel estimation at the receiver. [13 Apr 2007]
Efficient Power Allocation for Coded OFDM Systems
White Paper One of the advantages of the OFDM technique is robustness against the inter-symbol interference caused by multipath channels. Orthogonal Frequency Division Multiplexing (OFDM) is a transmission technique... [11 Apr 2007]
Increasing Time Domain Diversity in OFDM Systems
White Paper Delay- and Doppler spread of multipath fading channels have already been identified as sources of diversity in wireless communications systems. This paper proposes a method for increasing the Doppler spread of the... [11 Apr 2007]
MIMO-OFDM
White Paper OFDM is modulation method known for its capability to mitigate multipath. In OFDM the high speed data stream is divided into Nc narrowband data streams, Nc corresponding to the subcarriers or subchannels i.e.one OFDM... [11 Apr 2007]
Maximising Signal Strength Inside Buildings for Wireless LAN Systems Using OFDM
White Paper Propagation inside buildings suffers from large shadowing and high multipath effects. OFDM has a high multipath tolerance and this paper shows how this can be used to overcome the problems due to shadowing. [11 Apr 2007]
OFDM Power Loading Using Limited Feedback
White Paper Orthogonal Frequency Division Multiplexing (OFDM) is a practical broadband signaling technique for use in multipath fading channels. This paper presents two power allocation selection algorithms that optimize the... [11 Apr 2007]
Adaptive Antenna Arrays for CCI/ISI Reduction in Broadband F/TDMA Cellular Networks
White Paper Adaptive array antennas are very effective in mitigating the effects of Co-Channel Interference (CCI) and multipath propagation in wireless communication systems. The STF suppresses CCI and reduces... [17 May 2006]
Co-Existence of 802.11g WLANs With Bluetooth
White Paper The advantages of OFDM WLANs are very high data rates, resilience to multipath and extended operating range. In this paper, the co-existence issue of OFDM WLANs with BT devices is examined and the use of... [12 Aug 2005]
Equalization With Oversampling in Multiuser CDMA Systems
White Paper Some of the major challenges in the design of new generation wireless mobile systems are the suppression of multiuser interference (MUI) and inter-symbol interference (ISI) within a single user created by the... [26 Jul 2005]
