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A high-speed radix-64 parallel multiplier using novel reduced delay partial product generator is proposed. The use of radix-64 Booth encoder and selector for partial product generation by Sang-Hoon (Sang-Hoon Lee et al., 2002) reduces the number of partial product rows by six fold. The Booth selector selects one among X, 2X, 3X, 4X, 8X, 16X, 24X and 32X where X is the multiplicand. Before selection...
Adaptive modulation enables a WiMAX system to optimize the throughput based on propagation conditions. IEEE 802.16 (WiMAX) system support BPSK, QPSK, 16-QAM and 64-QAM and the access scheme is OFDM. This paper presents the performance of different variants of transmission control protocols with different modulation schemes when density of mobile nodes changes.
This paper describes compression software that uses different algorithms for compressing data as well as image. The data compression is done by using adaptive Huffman technique, which compresses the data as well as send it to another person in the network in a single pass. The image compression is done by fractal encoding using evolutionary genetic approach. Preprocessing like partitioning, identification...
Morphology is the field of the linguistics that studies the internal structure of the words. Morphological analysis and generation are essential steps in any NLP application. Morphological analysis means taking a word as input and identifying their stems and affixes. Morphological analysis provides information about a wordpsilas semantics and the syntactic role it plays in a sentence. Morphological...
Web services are the growth of distributed paradigm. In web service system the load/stress test are simulated to reduce the traffic in abnormal condition. Cognitive Metrics focus on perceptual, problem solving, decision making and analytical behaviors of the individuals. Cognitive metrics are used to measure the complexity of the system to improve its performance. Cognitive metrics in testing is to...
In this paper we present a very simple and yet effective algorithm to generate codebook. The algorithm uses sorting method to generate codebook and the codevectors are obtained by using median approach. The proposed algorithm was experimented on six different images each of size 512 x 512 and four different codebooks of sizes 128, 256, 512 and 1024 are generated. The proposed algorithm is found to...
Genetic algorithms have been successfully applied in the area of software testing. The demand for automation of test case generation in object oriented software testing is increasing. Genetic algorithms are well applied in procedural software testing but a little has been done in testing of object oriented software. In this paper, we propose a method to generate test cases for classes in object oriented...
In the parameterized string matching, a given pattern P is said to match with a substring t of the text T, if there exist a bijection from the symbols of P to the symbols of t. This problem has an important application in software maintenance, where we wish to find the equivalency between two sections of codes. Two sections of codes are said to be equivalent, if one can be transformed into the other...
In wireless communication systems, intended to support broadcast services, it is not feasible to use an error control strategy such as automatic repeat request (ARQ) due to the heavy channel and transmitter load caused by all repeat-requests. An alternative error correcting strategy not suffering from the disadvantages of using ARQ is the introduction of a forward error correcting (FEC) code. In this...
Turbo decoder uses any one of the decoding algorithm of maximum a-posteriori probability algorithm (MAP) or Soft Output Viterbi Algorithm (SOVA). The traditional turbo code system use equal error protection (EEP). In many applications all the information don't need equal importance. So we need a new method unequal error protection (UEP). By doing so the important message is more protected than the...
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