The simulation of computer architecture is an important task in the development of new architectures. Exploring novel architectures requires simulations which are flexible, easy to produce, and high performance. The greater these characteristics, the more efficiently the design space can be explored. A number of simulation frameworks exist which can assist the architect in creating new simulato...

We develop a new switch-level simulator, CSim, for MOS transistor cells. CSim simulates cells without circuit parameters, such as the sizing of transistors. To tackle the challenges caused by the lack of circuit parameters, a new transistor-level levelization algorithm is developed. SPICE simulator is used as reference simulator, CSim is accurate in a sense that the simulation results for a cel...

There are many research and clinical settings in which accurate objective measures of speech intelligibility are either necessary or highly desirable. Unfortunately, most objective measures of intelligibility require blinded human listeners to classify speech tokens obtained from the talker whose speech intelligibility is to be measured, a process that can be both costly and time-consuming to c...

SUMMARY We propose a novel asynchronous direct-sequence code-division multiple access (DS-CDMA) using feedback-controlled spreading sequences (FCSSs) (FCSS/DS-CDMA). At the receiver of FCSS/DS-CDMA, the code-orthogonalizing filter (COF) produces a spreading sequence , and the receiver returns the spreading sequence to the transmitter. Then the transmitter uses the spreading sequence as its upda...

Multi-Carrier Code Division Multiple Access (MC-CDMA) is a modulation scheme that combines the advantages of OFDM and CDMA to provide robustness against frequency selectivity in wireless channels. Arrayed MC-CDMA systems combine MC-CDMA and antenna array technology to harness the spatial and temporal ’signatures’ of received signals, thus making it possible to realize high transmission rates en...

The performance of a multitone Code Division Multiple Access (CDMA) system is investigated in this paper by considering the effect of multipath fading, diversity and narrowband interference. The performance is evaluated in terms of the average bit error rate when both multiple access and partial band interference are present. Results are obtained by deriving the statistics of the receiver outpu...

This work is aimed at investigating the use of Multi Carrier CDMA (MC-CDMA) techniques in variable bitrate transmission over low-earth-orbit (LEO) satellite channels by means of realistic simulations. It is known by literature that MC-CDMA techniques are much more resilient with respect to multi-user interference effects in multipath fading channels than single-carrier DS/CDMA ones. Moreover, M...

Code Division Multiple Access (CDMA) is currently dominating air interface technique used in wireless communications for 3G and 4G systems. Multicarrier CDMA has become the focus of current research interests in wireless digital communication. Multi carrier CDMA, Orthogonal Frequency Division Multiplexing (OFDM) techniques used for 3rd Generation and 4 th Generation wireless network systems all...

A novel multi-code multicarrier code division multiple access (MC-MC-CDMA) system is proposed and analyzed in a frequency selective fading channel. By allowing each user to tl'ansmit multiple orthogonal codes, the proposed MC-MCCDMA system can support various data rates, as required by next generation standards, and achieve spreading gain in the time domain. Multicarrier CDMA provides robustnes...

Barcoding photons can provide a host of functionalities that could benefit future quantum communication systems and networks beyond today's imagination. As significant application barcoding photons, we introduce code division multiple-access (CDMA) for various applications. In this context, discuss the fundamental principles novel CDMA (QCDMA) technique based on spectrally encoding decoding con...