In regards to turbo codes, to the author's knowledge, previous literature has treated decoder assisted frame synchronization and channel estimation as separate processes. Here a joint decoder assisted process of channel estimation and frame synchronization is proposed. In brief, the method entails using a sync word (SW) embedded mid-packet for both channel estimation and frame synchronization. ...

In the Gaussian listening-helper source-coding problem Encoder 1 and Decoder 1 observe respectively a pair of i.i.d. correlated Gaussian sources and both wish to communicate the first source to Decoder 2 subject to a distortion constraint. Encoder 1 sends a message to both decoders and then Decoder 1 – the listening-helper – sends a message just to Decoder 2. We derive an inner bound on the rat...

A frame synchronization scheme based on decoder soft outputs of low-density parity-check codes over high frequency channels is considered. In a coded orthogonal frequency division multiplexing based system, low-density parity-check code decoder soft outputs are exploited in order to perform frame synchronization. The decoder soft outputs are observed for several candidate frame start positions ...

We propose a decision-feedback decoder for coded signals transmitted over finite-state Markov channels. The decoder achieves maximum-likelihood sequence detection (in the absence of feedback errors) with very low complexity by exploiting previous bit decisions and the Markov structure of the channel. We also propose a similar decoder, the output-feedback decoder, that does not use previous bit ...

An encoder-decoder architecture with recurrent neural networks in both the encoder and decoder is a standard approach to the question-answering problem (finding answers to a given question in a piece of text). The Dynamic Coattention[1] encoder is a highly effective encoder for the problem; we evaluated the effectiveness of different decoder when paired with the Dynamic Coattention encoder. We ...

OBJECTIVE It is quite remarkable that brain machine interfaces (BMIs) can be used to control complex movements with fewer than 100 neurons. Success may be due in part to the limited range of dynamical conditions under which most BMIs are tested. Achieving high-quality control that spans these conditions with a single linear mapping will be more challenging. Even for simple reaching movements, e...

Low Density Parity Checker (LDPC) decoder requires large amount of memory access which leads to high energy consumption. The amount of achievable memory bypassing depends on the decoding orders of the layers. The proposed decoder was implemented in TSMC 0.18m CMOS process. Experimental results show that for a LDPC decoder targeting IEEE 802.11n specification, the amount of memory access values ...

The job of a decoder in statistical machine translation is to find the most probable translation of a given sentence, as defined by a set of previously learned parameters. Because the search space of potential translations is essentially infinite, there is always a trade-off between accuracy and speed when designing a decoder. Germann et al. [4] recently presented a fast, greedy decoder that st...

Variable length coding (VLC) is very suitable for regular data and efficient to compress data without any loss. VLC uses shorter bits of codewords instead of data occurring frequently, but uses the longer bits of codewords instead of data occurring infrequently. It is used in MPEG – 1/2/4 and H.26X (video and image compression standards). The entropy decoder in MPEG-4 AVC/H.264 baseline standar...

In this paper, the receivers with adaptive equalizer and turbo decoder are investigated for orthogonal frequency division multiplexing-code division multiple access (OFDM-CDMA) systems in multipath channels. The de-spreading equalizer which combines de-spreading and equalization is used to mitigate the MAI and ISI. The stochastic gradient based LMS algorithm is used as the adaptive algorithm fo...