The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The concept of vector symbol decoding (VSD) for convolutional codes was shown to be a good decoding technique for convolutional codes with large nonbinary symbols or packet-symbols. However, the hardware implementation in Phase I was designed for very simple error patterns, which can be decoded using only one syndrome vector. This new Phase II decoder extends its ability to decode more complicated...
In this paper, we present a generalized principal ratio combining (PRC) for STTC-OFDM in quasi-static flat fading and frequency selective fading environments. As the number of receive antennas increases, the decoding complexity of PRC decreases but the performance degradation increases. In the proposed scheme, we sheave the receive antennas into Q groups and the PRC decoding method is applied to each...
Multiple Input Multiple Output (MIMO) systems have received enormous attention by researchers as they can provide a roughly linear increase in capacity of wireless communications systems by using multiple transmit and receive antennas. Even with the larger raw data rates provided by MIMO, the throughput of these systems can be limited by the number of users (or networks) sharing the medium. This paper...
This paper introduces an efficient acquisition/correlation technique for DS-CDMA systems using a frequency-domain approach employing TCH-based training blocks (Tomlison, Cercas and Hughes). The classical time-domain active acquisition technique is compared with the proposed passive matched-filter type frequency domain technique. Moreover using the fact that an N-point discrete Fourier transform (DFT)...
Motion Compensation for video decoding in standards like H.264 requires significant amount of computation. This is primarily because of H.264 six-tap FIR filtering for sub-sample computation. These algorithms typically take more than 50% of the computational time on a RISC processor like ARM. Novel algorithms proposed through this paper can be employed for systems which use vector processors as video...
The design of space-time turbo trellis codes (ST Turbo TC) for improving the bandwidth efficiency and the reliability of wireless data networks, which is based on the turbo structure, has been proposed in the literature. However, like other turbo based coding schemes, the fundamental problems with the ST Turbo TC decoder are its complexity and decoding delay. In some cases the decoding delay may be...
In this paper, we propose a hardware implementation of the EMS decoding algorithm for non-binary LDPC codes, presented in [10]. To the knowledge of the authors this is the first implementation of a GF(q) LDPC decoder for high order fields (q ges 64). The originality of the proposed architecture is that it takes into account the memory problem of the non-binary LDPC decoders, together with a significant...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.