منابع مشابه
Adaptive Interleaving for OFDM in TDD Systems
We proposed a novel interleaving technique, namely ada,ptive interleaving, which can break the bursty channel errors more effectively than traditional block interleaving. This new scheme resequences the transmitted symbols adaptively according to the instantaneous subcarrier channel state information. In this way, the bursty errors introduced by the channel can be broken more effectively, thus ...
متن کاملAdaptive Modulation and Interleaving for BICM-OFDM
The optimisation of communication systems with respect to the applied channel code is a more recent topic in the field of adaptive communications compared to the optimisation of uncoded transmissions. Besides the information theoretical statements the applied codes are not perfect but practical codes which poses the additional problem to capture the structure and overall behaviour of a code suf...
متن کاملIntralevel Interleaving for BICM in OFDM Scenarios
Interleaver design for bit-interleaved coded modulation in highly bandwidth-efficient transmission is investigated. Based on an equivalent channel model with parallel binary input channels, the variation of the so-called bit level capacities is identified as an additional source of “fading” that has to be taken into account for interleaver design. We assess the more appropriate approach of intr...
متن کاملPerformance Enhancement of Continuous-Phase Modulation Based OFDM Systems Using Chaotic Interleaving
In this paper, we propose a chaotic interleaving scheme for continuous-phase modulation based orthogonal frequency-division multiplexing (CPM-OFDM) systems. The idea of chaotic maps randomization (CMR) is exploited in this scheme. CMR generates permuted sequences from the sequences to be transmitted with lower correlation among their samples, and hence a better bit error rate (BER) performance ...
متن کامل802.11a OFDM PHY Coding and Interleaving
In a communication system there are three fundamental resources : signal power, time and bandwidth. These resources can be traded against each other depending on the premium attached to each resource in a given situation. The general objective is achieve maximum data transfer, in a minimum bandwidth, while maintaining an acceptable quality of service. In digital communication the quality of ser...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Research Journal of Information Technology
سال: 2013
ISSN: 1815-7432
DOI: 10.3923/rjit.2013.449.455