Log map
BER Analysis Using Log Map Decoding Algorithm for Turbo Codes Channel
... The Log-MAP decoding algorithm is used which in fact is based on the same idea as the MAP decoding algorithm with the benefit that it simplifies the computation by eliminating the multiplicative ...
5
Low Complexity Approximate Log MAP Detection for MIMO Systems
... In this paper we proposed a so-called SOPHIE SDM detection method, which may be regarded as an advanced extension of the CSD method. We have shown that the SOPHIE SDM detector proposed closely approaches the optimum ...
6
Improved Max-Log-MAP Turbo Decoding by Maximization of Mutual Information Transfer
... the log-MAP al- gorithm in Figure 2 fits the predicted transfer function, the trajectory in Figure 3 clearly indicates the impact of numer- ical errors resulting from the max-log approximation: the ...
8
An Optimized Hierarchy Aided Approximate Log MAP Detector for MIMO Systems
... the Log-MAP detector while imposing a dramat- ically lower computational ...the Log-MAP SDM detector even in the heavily over-loaded ...
10
Reduced complexity Log MAP algorithm with Jensen inequality based non recursive max∗ operator for turbo TCM decoding
... the Log-MAP but its computational requirements are substantially ...AvN Log-MAP algorithm performs about 0.1 to 0.4 dB worse than the Log-MAP at BER of 10 −4 , depending on TTCM ...
11
BER Analysis Using Log Map Decoding Algorithm for Turbo Codes Channel
... Abstract- Turbo codes are a new class of forward error correcting codes that have proved to give a performance close to the channel capacity as proposed by C. Shannon. A turbo code encoder is formed by the parallel ...
5
Simulation Research on Turbo Equlization Algorithm Based on Microwave Fading Channel
... Max-Log- Map algorithm, Log-Map algorithm and Max-Log-Map algorithm are shown in Figure 3 and Figure ...Max- Log-Map equalization algorithm performance becomes ...
9
Efficient MAP-algorithm implementation on programmable architectures
... a Log-MAP implementation has a cycle count of approximately 50 cycles per bit, leading to a Turbo- decoding throughput of 600 kbit/s at 300 MHz (see Table ...
5
Reduced Complexity Maximum Likelihood Detection in Downlink SDMA Systems
... Figure 3 characterizes the computational complexity imposed by the different detectors considered. The corresponding system configu- ration and normalized system load characteristics are detailed in Table I. The ...
5
(E b/N0 ). Various parameters that influence the performance
... includes MAP which is the optimal method that produces the APP information, its additive form, Log-MAP, and its suboptimal form, Max- ...the Log-MAP algorithm is a transformation of ...
6
Smart Antenna Aided Multicarrier Transceivers for Mobile Communications
... In order to summarize the attained results, the achievable BER performance of the iterative MIMO- PAST-DDCE aided SDM-OFDM system considered in the context of both the symmetric MIMO config- uration of Figure 5.13 as ...
229
Forward-Error Correction Coding for Underwater Free-Space Optical Communication
... the log-MAP decoding algorithm with 16 decoding ...the log-MAP decoding algorithm with 16 decoding iterations, and have code rates r = 1/2, r = 1/3, r = 1/4, and r = 1/6, ...
160
MC CDMA based SDR for Next Generation Wireless Communication
... MC-CDMA based SDR system using super orthogonal turbo code with log-MAP algorithm is proposed in this paper. Simulation is done using MATLAB version 7.14.0. The results show that the proposed system ...
8
Performance Evaluation of Turbo Decoding Methods
... while map algorithm, max log map and the log map algorithm are symbol estimation ...Sova, Map,logmap,maxlogmap gives soft ...
6
Estimation of Two Dimensional Correction Factors for Min Sum Decoding of Regular LDPC Code
... to Log-MAP decoding can be com- pensated by scaling the a-posteriori LLR values of the information bits based on the fact that the latter is a growing estimate to the transmitted codeword, and the ...
7
Radial Basis Function Assisted Turbo Equalization
... the Log-MAP TEQ was approximately a factor ...for Log-MAP ...conventional Log-MAP TEQ [3] was negligible for BPSK and 4QAM, but was approximately ...
12
Vhdl Implementation Of An Area Efficient Algorithm For Turbo Decoders Having Wireless Sensor Networking Applications
... LUT Log MAP algorithm and constant Log MAP algorithm shows that turbo decoder using constant Log MAP algorithm requires lesser number of ...constant Log MAP ...
5
Fast Converging Generalized Turbo Decoding Scheme with Enhanced Throughput for Mobile Radio
... well-known log-MAP decoding algorithm by a linear approximation of the correction function used by the max* ...existing MAP algorithm for faster convergence and better throughput on the basis of ...
7
Importance of Centralized Log Server and Log Analyzer Software for an Organization
... The log analyzer software analyzes how the huge volume of log data is distinguished, disseminated and presented after ...developed log analyzer program helps to analyze the log Meta data viz; ...
7
Government Procurement and the Growth of Small Firms
... The figure above contains average growth rates t + k, k ∈ (1, 2, 3) years after winning a contract under the menor cuantia process. Growth is defined as the log differences. The bars represent the 95% confidence ...
36