TBICM-ID-SSD iterations, xIDec and yIDem respectively, iterative processing at the demapper side is shown to provide additional error correction [6].
As opposed to state-of-the-art detectors based on Voronoi surfaces, a priori information is taken into account, enabling iterative processing.
To achieve reliable channel estimation and data detection we employ a receiver capable of jointly performing these tasks through iterative processing.
In this section, we firstly introduce the Bayesian network structure and then use the following two models to evaluate BP-based channel decoding and state estimation: BP-based sequential processing and BP-based iterative processing.
The impressive performance of turbo (iterative) processing techniques that soon followed the discovery of turbo codes [4] has inspired many researchers to utilize the turbo principle in a variety of ways in the architecture of the receiver.
The results provide guidance for the design of system parameters including the data configurations, the number of iterations for both iterative processing and low density parity check (LDPC) decoding, which are beneficial to achieve a good efficiency-performance tradeoff.
Then, the significant functionalities of iiHadoop including iterative processing, incremental processing, and asynchronous iteration execution are explained.
Unlike automatic masking methods based on voxel weighting (Xu et al., 2012) or dimension reduction methods such as Principle Component Analysis (Heumann et al., 2011), our method is highly scalable because it is independent of the classification process and does not involve iterative processing of a large number of subtomograms.
Iterative processing uses the output from one iteration as an input to the next iteration, and as the number of iterations increases, the processing comes closer to convergence [19].
Figure 4 shows the runtime of the four algorithm on the traditional Hadoop, HaLoop, i2MapReduce, Iter-iiHadoop, and Async-Iter-iiHadoop. Fig. 4 Total running time of iterative processing.
Fig. 3 Incremental iterative processing for PageRank.
