As a technology to read brain states from measurable brain activities, brain decoding are widely applied in industries and medical sciences. In spite of high demands in these applications for a universal decoder that can be applied to all individuals simultaneously, large variation in brain activities across individuals has limited the scope of many studies to the development of individual-spec...

Viterbi Decoders are commonly used to decode convolutional codes in communications systems. This Viterbi Decoder is a fully parallel implementation which gives fast data throughput. The decoder is targeted for WiMAX and Wireless LAN applications. Input symbol metric pairs are decoded into output data bits by the maximum likelihood Viterbi processor core. Decoder supports both hard and soft inpu...

Spectrally and energy efficient orthogonal frequency division multiplexing (SEE-OFDM) is an optical OFDM technique based on combining multiple asymmetrically clipped optical OFDM (ACO-OFDM) signals into one OFDM signal. By summing different components together, SEE-OFDM can achieve the same spectral efficiency as DC-biased optical OFDM (DCO-OFDM) without an energy-inefficient DC-bias. This pape...

Reducing power dissipation is one of the most important issues that need to be addressed to improve the performance of all computing systems, such as supercomputers, cloud servers, desktop PCs, medical systems, and wearable devices. Exploiting parallelism and decreasing redundant power dissipation by fine grain power control for multicore/manycore systems are promising approaches, which can ens...

The readout of a classical memory can be modelled as a problem of quantum channel discrimination, where a decoder retrieves information by distinguishing the different quantum channels encoded in each cell of the memory (Pirandola 2011 Phys. Rev. Lett. 106 090504). In the case of optical memories, such as CDs and DVDs, this discrimination involves lossy bosonic channels and can be remarkably bo...

Flexibility is one mandatory aspect of channel coding in modern wireless communication systems. Among other things, the channel decoder has to support several code lengths and code rates. This need for flexibility applies to polar codes that are considered for control channels in the future 5G standard. This paper presents a new generic and flexible implementation of a software Successive Cance...

Future lithography systems must produce more dense chips with smaller feature sizes, while maintaining the throughput of one wafer per sixty seconds per layer achieved by today’s optical lithography systems. To achieve this throughput with a direct-write maskless lithography system, using 25 nm pixels for 50 nm feature sizes, requires data rates of about 10 Tb/s. In a previous paper, we present...

HE practical importance of Reed-Solomon codes is well established (see [1]-[7]). The application of Reed-Solomon codes spans from deep-space communication standard [2] -[4] and over the air teletext broadcast [5] to frequency-hop spreadspectrum systems [6] and optical communication [7]. Harddecision decoders for RS codes are readily available using algebraic decoding algorithms. Such ...

A novel VLSI implementation of the Viterbi algorithm based on a cascade architecture is presented. Survivor sequence memory management is implemented using a new single read pointer traceback technique. The overall design for a 16-qtate, rate 1/2 decoder requires about 26000 transistors and a core area of 8.5 mma in a 1.2 pm two-level metal CMOS technology.

The application of turbo codes in modern communication systems makes decoding a time and power consuming task. It is known that analog decoder are superior to digital decoder designs in terms of speed and power consumption. The fact that a modification of a single code parameter like the block length requires a new analog decoder implementation, in combination with a complexity, which grows lin...