نتایج جستجو برای: solid burst error
تعداد نتایج: 467807 فیلتر نتایج به سال:
This paper deals with derivation of bounds for linear codes which are able to detect and locate 2-repeated low-density burst errors occurring within a sub-block. An example of such a code has also been provided. 2000 Mathematics Subject Classification: 94B20, 94B65, 94B25.
wimax که مبتنی بر استاندارد ieee 802.16 می¬باشد، یک تکنولوژی بی سیم بر اساس روش دسترسی چندگانه ofdma است. ofdma منابع موجود (زمان و فرکانس) را به چندین زیرحامل متعامد در دامنه فرکانس و چندین سمبل مجاور در دامنه زمان تقسیم می کند. مساله تخصیص پهنای باند در ieee 802.16 این است که چگونه بلوک های دوبعدی در محدوده زمان و فرکانس (که burst نامیده می شود) به کاربران تخصیص داده شود. تخصیص منابع برای کار...
This paper obtains bounds for linear codes which are capable to correct the errors blockwise which occur during the process of transmission. The kind of errors considered are known as repeated burst errors of length b(fixed), introduced by Dass and Garg (2009). An illustration for such kind of codes has also been provided. Mathematics Subject Classification: 94B20, 94B25, 94B65
This work proposes an adaptive unequal error protection (UEP) and packet size assignment scheme for scalable video transmission over a burst-error channel. An analytic model is developed to evaluate the impact of channel bit error rate on the quality of streaming scalable video. A video transmission scheme, which combines the adaptive assignment of packet size with unequal error protection to i...
In this letter, we propose a new ordered decoding scheme for a product code for mobile data communications. The ordered decoding scheme determines the order of decoding for both row and column component codewords according to the probability of decoding the component codeword correctly. Component codewords are decoded independently. To randomize burst errors in both row and column codewords, a ...
Checksums are routinely used to detect data transmission errors. However, design decisions about which checksum to use are difficult because of a lack of information about relative effectiveness of available options. We study the error detection effectiveness of the Fletcher and Adler checksums for random independent bit errors and burst errors. Our study reveals that in most cases the Fletcher...
In wireless network environments, the effect of transmission errors and losses on the video quality vary, depending on the intensity of the burst, and which parts of the video stream are lost. Among the existing transmission error control techniques, FEC and ARQ represent good solutions for combating transmission errors, but require redundant data. Interleaving can improve subjective video qual...
New methods are presented to protect maximum runlength-limited sequences against random and burst errors and to avoid error propagation. The methods employ parallel conversion techniques and enumerative coding algorithms that transform binary user information into constrained codewords. The new schemes have a low complexity and are very efficient. The approach can be used for modulation coding ...
We discuss the design principles of TCP within the context of heterogeneous wired/wireless networks and mobile networking. We identify three shortcomings in TCP’s behavior: (i) the protocol’s error detection mechanism, which does not distinguish different types of errors and thus does not suffice for heterogeneous wired/wireless environments, (ii) the error recovery, which is not responsive to ...
On a bi-level colour device, only eight distinct colours (including black and white) are able to be represented. One common method of mapping image data to such a device is to use error diffusion techniques. These techniques diffuse the error from representing a particular pixel to adjacent unprocessed pixels, with the effect that locally the average pixel value closely approximates that of the...
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