Aiming at the practical demands of key network design of C~3I communication system, the paper lays the emphasis on the research for the calculation of transmission losses of military satellite communication channel.
This method can redu ces image head tag error probability from2.7×10-4 before protection to8.1×10-9 after protection,which the communication channel error probability is10-5 ,and there is no time delay in decoding.
Aliasing error bounds are derived for one- and two-channel sampling series analogous to the Whittaker-Kotel'nikov-Shannon series, and for the multi-band sampling series, and a "derivative" extension of it, due to Dodson, Beaty, et al.
Aliasing in the one-channel case is shown to arise from a transformation with similarities to a projection.
An Estimation of the Truncation Error for the Two-Channel Sampling Formulas
Guanidine-type compounds that reached clinical status include amongst others the potassium channel opener, pinacidil and the histamine H2-receptor antagonists (e.g.
The tetra-n-butylammonium cations were stacked to give two columns within each channel with cross-sectional size of about 2.30 nm × 0.93 nm.
Ameltolide shares with phenytoin and carbamazepine a common mode of action involving interaction with central voltage-dependent sodium channels.
Performance Analysis of LDPC on Rician Fading Channels
This paper analyzes and simulates the performance of irregular low-density parity check (LDPC) codes on Rician fading channels.
The authors also modified the brief propagation decoding algorithm, proved the symmetry and showed the stability conditions of the channels, and calculated the Shannon limits on Rician channels in this paper.
Therefore, the performance of LDPC is also very effective on all kinds of channels, including the Rician kind.
The channel parameters are estimated and transmitted signals are jointly detected by a simple recursive algorithm derived from the EM/SAGE algorithm.
Compared with the dynamic threshold method, the balance encoding scheme can be implemented more easily, and is more robust to the channel time variant characteristics, the channel estimation of RAKE receiver and the combination techniques.
Sensitivity analysis of the channel estimation deviation to the MAP decoding algorithm
As a necessary input parameter for maximum a-posteriori(MAP) decoding algorithm, SNR is normally obtained from the channel estimation unit.
In underwater acoustic communication, because the available bandwidth of the channel is severely limited, the direct-sequence spread-spectrum scheme can only be realized at low bit rates.