Abstract The mode of exhaust gas recirculation (EGR) and the flow recirculated greatly impact heat recovery mechanical turbo-compound. A matching turbo-compound diesel engine is established with GT-power software to study effect EGR rate on it, working performance under high-pressure low-pressure also studied. results show that compared original engine, effective thermal efficiency matched has ...

Basically, conventional single-carrier system has an advantage in limited power communication systems. However, the performance of conventional single-carrier system is seriously degraded by ISI (inter-symbol interference). In order to overcome the ISI, communication systems are commonly used an equalizer. Turbo equalization technique was proposed to maximize system performance over ISI channel...

This paper studies the performance of phase modulation through a fully saturated power amplifier and AWGN channel for broadband wireless systems. A nonlinear model for the fully saturated power amplifier is derived. The equivalent impulse response method is provided to analyze the SNR degradation. Both convolutional code and turbo code are used. The Viterbi decoding and the iterative decoding a...

In this paper, a joint iterative power control and parallel interference cancellation (PIC) scheme is proposed for turbo coded uplink DS-CDMA systems to suppress the multiple access interference (MAI) from co-channel users and interantenna interference (IAI) from adjacent antennas of each user. Simulation results show that the proposed scheme could compensate for some channel fading effect thro...

In this work we present a full analog turbo decoder for hard-disk EPR-IV read channels in CMOS technology. The design is based on a current-mode approach developed by Loeliger et al. [1], for the analog implementation of sum-product algorithms. The circuits main attractions are the coding gain offered by turbo codes over the uncoded EPR-IV channel, and the relative simplicity and power efficien...

Turbo codes have become part of the third generation W-CDMA systems because of their extraordinary coding performance. However, decoder implementation in commercial systems suffers from power, latency and complexity limitations. Here, we address new optimization techniques to overcome these problems. This paper makes two contributions. First, SISO block is designed in a pipeline approach which ...

In this paper, we propose a low complexity architecture for turbo equalizers. Turbo equalizers jointly equalize and decode the received signal by exchanging soft information iteratively. The proposed architecture employs early termination of the iterative process when it does not impact the bit-error rate PER). Early termination enables the powering down parts of the soft-input soft-output (SIS...

During hot seasons the inlet temperature of Nitrogen increases, as a result compressor consumes more power for compressing a specific mass ratio of fluid and consequently total energy consumption of the compressor increases as well. In this research, a three stage centrifugal compressor with intercooler was modeled thermodynamically in order to decreases the energy consumption of the compressor...

The system performance analysis of turbo coded systems in wireless packet transmission applications usually assumes that the channel has been estimated and synchronization parameters are properly set. This paper discusses a realistic turbo coding system when the signal phase or timing offset have not been perfectly compensated. Its intention is to give an overview of the synchronization techniq...