Results 11 to 20 of about 4,597,743 (231)
A Novel training-based MIMO channel estimation scheme for layered space-time systems in frequency selective wireless channels [PDF]
, 2009 New development in wireless technology using multiple antennas with appropriate space-time processing has recently become the new frontier of wireless communication systems due to the potential for providing very high spectral efficiency and enormous ...
Siyau, Ming F.
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An error bound analysis for M-DPSK in frequency-selective Rayleigh fading channel with diversity reception [PDF]
, 1994 A theoretical upper bound is presented to calculate the error probability for raised cosine filtered M-ary differential phase-shift keying (RC M-DPSK) in frequency-selective Rayleigh fading channels.
Nix, AR, Chow, YC, McGeehan, JP
core +1 more source
A modified Alamouti scheme for frequency selective channels incorporating turbo equalization [PDF]
, 2002 The Alamouti scheme can achieve transmit diversity in the presence of frequency selective flat fading channels. The technique has received considerable attention mainly because of its processing simplicity. Recently, a modification to the Alamouti scheme
Nix, AR +3 more
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Multi-user MIMO CDMA systems using complete complementary sequences. [PDF]
, 2006 The authors propose a novel use of complete complementary (CC) sequences for increased spectral efficiency in a multiple-input–multiple-output (MIMO) code division multiple access (CDMA) system.
Khirallah, C. +5 more
core +5 more sources
, 2007 Orthogonal Frequency Division Multiplexing (OFDM) has been employed in numerous wireless standards. However, the performance of OFDM systems is degraded by both the Carrier Frequency Offset (CFO) and the Phase Estimation Error (PER).
Liu, X., Hanzo, L.
core +2 more sources
Secured Communication over Frequency-Selective Fading Channels: A Practical Vandermonde Precoding
EURASIP Journal on Wireless Communications and Networking, 2009 We study the frequency-selective broadcast channel with confidential messages (BCC) where the transmitter sends a confidential message to receiver 1 and a common message to receivers 1 and 2.
Debbah Mérouane +2 more
doaj +2 more sources
Comparison of Achievable Rates of OFDM and Single Carrier Communication Systems
Tsinghua Science and Technology, 2012 This paper presents a theoretical comparison of a single carrier system and a multi-carrier system through an analysis of the achievable rate under frequency selective fading with channel state information at the receiver.
Jiaqi Zhang, Yukui Pei, Ning Ge
doaj +1 more source
WAVELET MODULATION PERFORMANCE IN FADING CHANNELS [PDF]
Journal of Electrical and Electronics Engineering, 2008 Wavelet modulation simultaneously sends dataat multiple rates through an unknown channel. Preuiousresearch has demonstrated that wauelet modulation biterror rate performance in the additive, white, Gaussiannoise channel is comparable to theoretical ...
C. Gordan, R. Reiz, L. Morgoş
doaj
EURASIP Journal on Advances in Signal Processing, 2002 Differential space-time modulation (DSTM) for multiple antenna communication systems has been recently proposed for frequency-nonselective fading channels. In broadband multirate systems, frequency-selective fading may occur.
Wang Genyuan, Song Aijun, Xia Xiang-Gen
doaj +1 more source
IEEE Access, 2016 In this paper, a novel joint continuous power and rate adaptation scheme is proposed fordoubly selective fading channels in orthogonal frequency division multiplexing (OFDM) systems, based on terminal velocity and perfect or imperfect channel state ...
Zhi-Cheng Dong +3 more
doaj +1 more source