OFDM symbols
Performance Analysis of MSE-OFDM System
... MSE- OFDM is a bandwidth efficient OFDM scheme, where a number of OFDM symbols are grouped together as a frame and protected by one single cyclic ...
10
Identifying time-varying channels with aid of pilots for MIMO-OFDM
... We examine now a much longer channel with length L = 15, for which the results are given in Figure 5. Note that in this figure, we do not list the performance of Comb-type I because it failed in the simulation. We will ...
19
Adaptive MIMO-OFDM Channel Estimation of Super Resolution Approach Utilizing Spatial and Temporal Correlation and TTOP
... adjacent OFDM symbols are nearly unchanged which is equivalently referred as a common sparse pattern of CIRs due to the temporal correlation of MIMO ...
7
Performance Analysis of Adaptive Beamforming Algorithms for Orthogonal Frequency Division Multiplexing System
... The OFDM symbols are transmitted through a two ray channel with Additive White Gaussian Noise (AWGN), frequency response of the channel is given in Figure 1a and Figure ...received symbols through ...
5
Probability distribution analysis of M-QAM-modulated OFDM symbol and reconstruction of distorted data
... (OFDM) symbols have an identical Gaussian probability distribution (PD) in the real and imaginary ...M-QAM/OFDM symbols with N ...distorted OFDM symbols due to deliberate ...
9
Fast Fourier Transform Pipeline Architecture for OFDM
... The OFDM technique is easier to understand and implement, and the sub-channels can be independently adapting in other ways than varying equalization coefficients, such as switching between different QAM ...
5
Low Complex Papr Reduction by Alternative Signal Method and Iterative Companding and Filtering Method in OFDM/OQAM Model
... the OFDM signal and it is defined as the ratio of the maximum instantaneous power to its average ...this, OFDM system requires tight frequency synchronization in comparison to single carrier systems, ...
6
ANALYSIS OF DIFFERENT LENGTH OF SUB CHANNELS AND DIFFERENT ORDER OF MODULATION ON THE BASIS OF BIT ERROR RATE IN OFDM SYSTEM
... the OFDM symbol and does not add any new ...the OFDM signal through which a “linear convolution” operation can be performed on the transmitted signal by the channel, can be approximated by a “circular ...
9
AN EFFICIENT SUPER PEER SELECTION ALGORITHM FOR PEER TO PEER (P2P) LIVE STREAMING NETWORK
... High speed internet connection is required to satisfy users' demand for modern E-applications of these days. WiMAX and LTE are two kinds of high speed broadband wireless communications. WiMAX emerged with fixed ...
13
Improving Wireless MIMO System Performance with Channel Estimation Based Block Coding
... the symbols of an orthogonal design can be transmitted on neighboring subcarrier of the same OFDM symbol rather than on the same sub- carrier of subsequent OFDM symbols ...
6
MIMO-OFDM Wireless Broadband System With Adaptive Transmission Mode (ATM) Controller
... conventional OFDM based link adaptive systems rely on modifying only modulation coding scheme ...between OFDM symbols and MIMO mode (space-time block coding (STBC) or spatial division multiplexing ...
9
The Physical Layer of the IEEE 802.11p WAVE Communication Standard: The Specifications and Challenges
... pilot symbols are inserted into every OFDM symbol to facilitate channel ...pilot symbols are inserted in each OFDM ...pilot symbols to avoid excessive transmission rate ...training ...
8
Block Transmissions over Doubly Selective Channels: Iterative Channel Estimation and Turbo Equalization
... Figure 6 illustrates the BER performance of the proposed iterative frequency-domain block turbo equalizer for SC systems with average approximation, for both perfect and estimated CSI. It is shown that the second ...
13
symbols
... we assume to be analytic in both its arguments. (Series expansion is one general way how to define functions of operators.) Both background fields can in principle have some additional matrix structure (internal degrees ...
6
A HYBRID ANT COLONY SYSTEM FOR GREEN CAPACITATED VEHICLE ROUTING PROBLEM IN SUSTAINBALE TRANSPORT
... a sub-carrier which is taken from orthogonally separated sub-carriers with equal separation within each sub-carrier. This utilizes the bandwidth efficiently as the subcarriers are overlapping and orthogonal to each ...
7
Efficient inner receiver design for OFDM based WLAN systems: Algorithm and architecture
... We have investigated the implementation of the Inner Receiver of an OFDM-WLAN system based on the IEEE 802.11a standard. Solutions for the most critical blocks, i.e. Synchronizer, Channel Estimator and Digital ...
12
Can symbols be ‘promoted’ or ‘demoted’?: Symbols as religious phenomena
... of symbols. Heumann (1983:11) prefers to say that symbols refer to elements on the periphery of ...society. Symbols are then assigned to religion, sub-cultures or tradition (Heumann ...1983:11). ...
10
A Multiresolution Channel Decomposition for H 264/AVC Unequal Error Protection
... The OFDM MR-modulation have the desirable property that the probability of the symbol error of the coarse layer is unaffected by the error in the fine ...onto OFDM-carriers using Gray-coded QPSK modula- ...
15
Download complete issue: Vol. 1, No. 1 (PDF)
... The data MAC PDU length is the parameter that highly influences the MAC layer performance. Obviously longer PDUs mean less MAC overhead. Another way of reducing the MAC overhead is usage of a higher modulation/coding. ...
7
Performance Analysis of MC CDMA over Different Fading Channels
... The data symbols of the multiple users are transmitted on the sub channels and then multiplied by the chips of spreading codes. Here the length of the spreading code need not to be equal to the number of ...
5