Turbo decoding is viewed as superior alternate decoding technique in communication system, the circuit complexity and power consumption of turbo decoder implementation can often be prohibitive for power constrained system. To address these issues a power efficient turbo decoder based on soft out viterbi algorithm is designed. SOVA based turbo decoder can be implemented with high throughput and ...

—This article presents an FPGA implementation of an ultra-high-speed Reed-Solomon (RS) turbo decoder. A performance analysis is performed showing that RS Block Turbo Codes (RS-BTC) have decoding performance equivalent to Bose Ray-Chaudhuri Hocquenghem-Block Turbo Codes (BCH-BTC). A ratio between the decoder throughput and the decoder area is used to show the higher ef ciency of the RS full para...

In this paper, we compare the performance of several different decoding strategies for concatenated codes based on a serial concatenation of a rectangular parity-check code (RPCC) with a turbo code. These concatenated codes are referred to as RPCC+turbo codes. RPCC+turbo codes have been shown to significantly outperform turbo codes in several scenarios [1],[2]. One particularly useful applicati...

Rewriting sequential programs to make use of multiple cores requires considerable effort. For many years, Amdahl’s law has served as a guideline to assess the performance benefits of parallel programs over sequential ones, but recent advances in multicore design introduced variability in the performance of the cores and motivated the reexamination of the underlying model. This paper extends Amd...

Turbo Abstract State Machines are ASMs with parallel and sequential composition and possibly recursive submachine calls. Turbo ASMs are viewed as black-boxes that can combine arbitrary many steps of one or more submachines into one big step. The intermediate steps of a turbo ASM are not observable from outside. It is not even clear what exactly the intermediate steps are, because the semantics ...

This paper discusses the application of adaptive modulation and adaptive rate turbo coding to orthogonal frequency-division multiplexing (OFDM), to increase throughput on the time and frequency selective channel. The adaptive turbo code scheme is based on a subband adaptive method, and compares two adaptive systems: a conventional approach where a separate turbo code is used for each subband, a...

Turbo-roundabouts are one of the most frequently recommended road junction design options when it comes to increasing traffic capacity and safety. This is in particular true suburban areas, with dominant flow on main moderate side road. Other intersections handling local considerably constricting availability space usually located vicinity such intersections. Another factor contributing limited...

From Wright Brothers 1903 to present day 2003, aeronautical technology has made a profound progress. This paper demonstrates the outcome of this progress in weight, wing area, and engine thrust in three categories of transport aircraft of short to long range, regional jets, and turbo-prop commuter aircraft. Also the paper includes those aircraft with distinct jump in aeronautical technology. Fe...