frequency selective transmission channels
A Low-Complexity Time-Domain MMSE Channel Estimator for Space-Time/Frequency Block-Coded OFDM Systems
... orthogonal frequency-division multiplexing (OFDM) transmission through frequency-selective channels, this paper pursues a channel estimation approach in time domain for both ...
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Frequency-Selective Energy Tunneling in Wire-Loaded Narrow Waveguide Channels
... To demonstrate the improvement in isolation characteristics, the height of the middle waveguide is varied from 3.56 mm to 5.2 mm and the positions of the wires are adjusted so that the overlap length decreases from 2.44 ...
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Receivers and CQI Measures for MIMO-CDMA Systems in Frequency-Selective Channels
... packet transmission with forward error-correction coding, MIMO schemes can be classified into two categories, namely, jointly encoded (JE) and sepa- rately encoded ...
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Adaptive Zero Padding OFDM over Frequency Selective Multipath Channels
... To increase the BW efficiency of ZP-OFDM systems, redun- dancy introduced in transmission must be reduced. In fact, from the guaranteed symbol recovery property of ZP-OFDM discussed in Section 3, we find that the ...
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Performance of multicarrier complementary coded CDMA under frequency selective Nakagami m fading channels
... rate transmission in future wireless communication ...over frequency-selective channels suffer from multiple access interference (MAI) owing to non-ideal correlation properties of ...
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STC-Mimo Block Spread OFDM in Frequency Selective AWGN Channels
... bandwidth channels of data through a wideband ...providing transmission using low bandwidth sub channels within the allocated ...the frequency selective fading of signals and similarly ...
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1. A robust and efficient channel estimation scheme for ofdm systems in frequency selective fading channels
... Moreover, the transmission of data at higher speeds results in a thin multipath channel. The signal subspace attribute of the correlation matrix can be effectively mitigated when the construction of correlation ...
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Successive interference cancellation schemes for time-reversal space-time block codes
... in frequency- selective fading ...for frequency-selective and doubly selective fading channels show that the proposed schemes significantly outperform the conventional minimum ...
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Secured Communication over Frequency Selective Fading Channels: A Practical Vandermonde Precoding
... the frequency-selective channel by focusing on the frequency- selective ...block transmission of N symbols followed by a guard interval of L symbols discarded at both receivers, the ...
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Rake Receiver Detection of Adaptive Modulation Aided CDMA over Frequency Selective Channels
... picted in Fig. 2 corresponds to the single user performance of a Rake-receiver assisted DS-CDMA system employing AQAM, i.e. without inflicting multi-user interference. Near single user performance is achievable for ...
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Effective Needs of Space-Time-Frequency Coding in MIMO-OFDM Communication over Frequency Selective Fading Channels
... data transmission assets, persuade inquire about toward creating productive coding and tweak conspires that enhance the quality and transfer speed effectiveness of remote ...
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Diversity Techniques for Single Carrier Packet Retransmissions over Frequency Selective Channels
... With regard to the system complexity, we see that the CFSD requires only N additional complex multiplications at the transmitter and a simple vector shift operation at the receiver. In addition, the complexity of the ...
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Time-Varying FIR Equalization for MIMO Transmission over Doubly Selective Channels
... time-varying frequency-selective channels is investigated in ...(SIMO) transmission over doubly selective channels, ZF and MMSE time-varying FIR equalization techniques were ...
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Linear and Nonlinear Time Domain Block Equalizers on MIMO Frequency Selective Channels
... In this paper, we propose the novel linear and nonlinear block equalization schemes in time domain for the SC transmission with short block length, where the CSI is only available at the receiver. We firstly ...
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Optimizing time and space MIMO antenna system for frequency selective fading channels
... (MIMO) channels [10], [11] or joint transmitter receiver systems ...multiple transmission and reception filter ...a frequency domain ...fading channels in the presence of CCI are ...for ...
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Identification of LOS in Time Varying, Frequency Selective Radio Channels
... the transmission param- eters according to its observations and past “experiences” ...the transmission can easily switch to a higher-order modulation, or even to a higher frequency band to obtain ...
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Blind Coarse Timing Offset Estimation for CP OFDM and ZP OFDM Transmission over Frequency Selective Channels
... orthogonal frequency division multiplexing ...(NLOS) frequency selective channels as well as for ZP-OFDM trans- ...in frequency selective channels with strong multipath ...
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Improved Diversity Analysis of Coded OFDM in Frequency Selective Channels
... For further improvement convolutional coding scheme is replaced low-density parity-check (LDPC) code. LDPC coding scheme has many advantages over convolutional codes. LDPC is a linear error correcting code. LDPC enables ...
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Design of Precoding and Equalisation for Broadband MIMO Transmission
... high transmission rate, however, requires the use of broadband systems which are affected by frequency selective channels, ...a frequency selective fading channel, has drawn ...
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Orthogonal frequency division multiplex synchronization techniques for frequency selective fading channels
... RTHOGONAL frequency division multiplexing (OFDM) was discovered by Chang in his pioneering paper in 1966 ...dispersive transmission media can be rendered nondispersive, if the transmission channel is ...
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