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Extreme technology integration in the sub-micron regime comes with a rapid rise in heat dissipation and power density for modern processors. Dynamic voltage scaling is a widely used technique to tackle this problem when high performance is not the main concern. However, the minimum achievable supply voltage for the processor is often bounded by the large on-chip caches since SRAM cells fail at a significantly...
The focus of this paper is the extension of maximum asymptotic efficiency (MAE) equalization for application to time-varying communication channels. While the asymptotically optimal MAE equalizer is very attractive in its low runtime complexity, it suffers from high (exponential in channel and equalizer length) design complexity. Frequent redesign renders the effective operational complexity of the...
Abstract-This paper presents a new way to realize the dynamic model of MIMO channel in presence of m-Nakagami fading. The dynamic model is compared with the static model of MIMO channel and the performance analysis of SISO, SIMO, MISO and MIMO systems is evaluated in presence of m-Nakagami distribution. All the results are plotted between signal to noise ratio (SNR) and bit error rate (BER) which...
Multi-carrier system has been fuelled by large demand on frequency allocation, resulting in a crowded spectrum as well as large number of users requiring simultaneous access. Existing wireless systems may be utilized single frequency, single antenna and pulse for carrier transmission and reception. Problems of such system is that in case of failure the total system will become non operational. So...
This paper proposes to estimate very low system BER using quasi-analytical (QA) method. The results from both theoretical analysis and simulation show that QA estimation is unbiased. Based on calculation of the simulation variance and improvement ratio for QA estimation, the QA is very effective for estimation of very low BER for system with intersymbol interference (ISI), jitter and additive noise.
An efficient genetic algorithm (GA) assisted bit error rate (BER) estimation method using a sum of Gaussian approximation (SGA) for a single channel optical direct detection DPSK system affected by nonlinear phase noise is presented.
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