40,707 research outputs found
Partial Spatial Coupling of LDPC Codes: Reducing the Gap to Capacity by Improving the Rate
No full textA different approach for constructing protograph-based spatially coupled low-density parity-check (SC-LDPC) codes is proposed. Instead of lifting multiple copies of an identical SC-LDPC protograph at the lifting stage of code construction, we divide the copies into fractions α ∈ [0,1] SC-LDPC protographs and β = 1-α uncoupled sequence of block LDPC protographs. The permutations in the edge bundles formed by two different protograph structures follow the multi-edge-type framework. The rate loss associated with SC-LDPC codes is reduced, and we obtain code ensembles with flexible rates, by varying β. We call these codes partial spatially coupled (PSC) LDPC codes, and through density evolution, we show that for data transmission over the binary erasure channel, the gap between channel capacity and thresholds of these codes is smaller as compared to SC-LDPC codes. The main bottleneck in the practical implementation of SC-LDPC codes is the rate loss. Conventionally, the rate loss can be reduced by taking large coupling length L , which however increases the decoding complexity. The proposed PSC-LDPC codes mitigate this tradeoff. Furthermore, these codes can also be decoded by the windowed decoder (WD), and through Monte Carlo simulations, we show that the WD performance of PSC-LDPC codes is better than that of SC-LDPC codes.
One-Step Ahead Decoding for Symmetric Block-Wise Concatenated BCH Codes
No full textSymmetric block-wise concatenated Bose-Chaudhuri-Hocquenghem (SBC-BCH) codes are known to provide strong error-correcting performance with an iterative hard-decision decoding (IHDD). This work shows that some properties of SBC-BCH codes allow one to readily increase the error-correcting capability of constituent BCH codes by one, i.e., from t to t+1 , which greatly improves the error-rate performance of SBC-BCH codes. To this end, we propose a new decoding algorithm that utilizes structural features of SBC-BCH codes in conjunction with an extension of the Berlekamp-Massey (BM) algorithm, namely the one-step-ahead (OSA) BM algorithm. This combination enables us to reduce the computational complexity and combat the inherent decoding ambiguity associated with the OSA-BM algorithm. Furthermore, we develop an analytical framework to evaluate the average number of candidate codewords returned by the OSA-BM algorithm and derive an upper bound on the probability of ambiguity. Then, we propose a decoding algorithm, called OSA-aided IHDD and conduct extensive performance evaluations and comparisons for error-correcting systems employing SBC-BCH codes with the proposed decoding algorithm. The performance evaluations show that the proposed OSA-aided IHDD considerably improves the error-rate performance in both the waterfall and error-floor regions.
Ha-Dibbur Ha-Ivri
No full textHebrew Speech, a manual for beginners for the study of Hebrew according to the Natural Method). Author: M. Krinsky. Illustrator: H. Goldberg. Publisher: Ha-Or Publishing. . 146 pp. 254 b/w ills. (+1 color chart) + cover b/w ill. primer.Digital imagedigitize
Il Drago ha anche le ali
No full text'Il Drago ha anche le ali' è una raccolta antologica delle poesie composte dall'autore cipriota di lingua turca Mehmet Yaşın (n. 1958). Tali poesie, apparse tra il 1984 e il 2007, seguono la poetica di Yaşın lungo due traiettorie: quella del recupero della memoria, personale e collettiva, soprattutto relativamente al conflitto turco-cipriota post-1974 e quella più propriamente formale, rappresentata dal ricorso a una lingua tenacemente votata alla trasgressione e allo sconfinamento
Author Ha Jin at Kalamazoo College
No full textPhotographer unknown.Author Ha Jin's book "Waiting" was selected for the 2002 Summer Common Reading program at Kalamazoo College. The author visited campus that year as part of the program
Developing A Marketing Recruitment Strategy For International Business
No full textOver the last 20 years, recruiting strategies have changed considerably due to the expansion of technology and the Internet. Human resources are also contemplated as the core competitive factor of businesses. This research is conducted to systematize the theoretical basis related to recruitment marketing. Moreover, at various phases, it employs both qualitative and quantitative research approaches.
In terms of the empirical component, the owner of the corporate case provided qualitative data. In contrast, quantitative data from possible candidates were reviewed. The theoretical portion gives the audiences a fundamental understanding of recruiting and the use of a recruitment marketing strategy. The author researched some surveys and case studies to gather data from both employees and employers.
On the whole, the research findings disclosed the importance of recruitment marketing to international enterprises. Businesses should focus on recruitment marketing to improve recruitment efficiency and reach a bigger pool of potential talents. In the end, the author designated some recommendations for businesses to improve recruitment marketing effectiveness
Bollywood cinema: A critical genealogy
No full text"Bollywood" has finally made it to the Oxford English Dictionary. The 2005 edition defines it as: "a name for the Indian popular film industry, based in Bombay. Origin 1970s. Blend of Bombay and Hollywood." The incorporation of the word in the OED acknowledges the strength of a film industry which, with the coming of sound in 1931, has produced some 9,000 films. (This must not be confused with the output of Indian cinema generally, which would be four times more). What is less evident from the OED definition is the way in which the word has acquired its current meaning and has displaced its earlier descriptors (Bombay Cinema, Indian Popular Cinema, Hindi Cinema), functioning, perhaps even horrifyingly, as an "empty signifier" (Prasad) that may be variously used for a reading of popular Indian cinema. The triumph of the term (over the others) is nothing less than spectacular and indicates, furthermore, the growing global sweep of this cinema not just as cinema qua cinema but as cinema qua social effects and national cultural coding. Although Indian film producers in particular, and pockets of Indian spectators generally, continue to feel uneasy with it (the vernacular press came around to using "Bollywood" only reluctantly), its ascendancy has been such that Bombay Dreams (the Andrew Lloyd Weber musical) and the homegrown Merchants of Bollywood both become signifiers of a cultural logic which transcends cinema and is a global marker of Indian modernity. As the Melbourne (March 2006) closing ceremony of the Commonwealth Games showed, Bollywood will be the cultural practice through which Indian national culture will be projected when the games are held in Delhi in 2010. International games (the Olympics, World Cup Soccer, Asian Games, Commonwealth Games, and so on) are often expressions of a nation's own emerging modernity. For India that modernity, in the realm of culture, is increasingly being interpellated by Bollywood
Islam and the Struggle for Religious Pluralism in Indonesia: A Political Reading of the Religious Thought of Mukti Ali
No full textProblems of inter-religious dialogue is one of the important discourse in the development of religious thought in modern Indonesia. One of the leading Muslim intellectuals seoran put a great interest in the discourse of religious thought is Prof. HA Mukti Ali, former Minister of Religious Affairs of the Republic of Indonesia, which has served as Rector of IAIN Yogyakarta.In the view of many people, known as Mukti Ali Muslim leaders who have diverse Islamic thought. He, set in the traditional students and the cast of revivalist organization, Muhammadiyah is the pioneer of Comparative Studies of Religion in Indonesia. He is also known as the man who chose the problem of inter-religious dialogue in Indonesia as 'immortal work' throughout his life. Equally important, Mukti Ali is an Indonesian Religious Affairs Minister re-orientation is important in the political-religious wisdom in the New Order.DOI: 10.15408/sdi.v3i1.81
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