In this paper, we analyze the performance of a novel multiresolution joint source and channel coding (MR-JSCC) scheme for mobile radio channels with feedback. The transmitter and receiver can match the resolution of each other synchronously, according to the channel state information (CSI). Bandwidth requirement could be met by carefully adjusting the resolution thresholds. The threshold determ...

This paper proposes a scheduling scheme using feedback control to reduce the response time of aperiodic tasks with soft real-time constraints. We design an algorithm based on the proposed scheduling scheme and Total Bandwidth Server (TBS) that is a conventional server technique for scheduling aperiodic tasks. We then describe the feedback controller of the algorithm and give the control paramet...

complies with the regulations of the university and meets the accepted standards with respect to originality and quality. Optical receivers have an important role in high data rate wireline data communication systems. Nowadays, these receivers have data rates of multi Gb/s. To achieve such high data rate in the design of optical receivers, all the amplifiers in the signal path need to be wideba...

Transimpedance amplifiers using voltage feedback operational amplifiers are widely used for current to voltage conversion in applications when a moderatehigh bandwidth and a high sensitivity are required, such as photodiodes, photomultipliers, electron multipliers and capacitive sensors. The conventional circuit presents a virtual earth to the input and at low frequencies, the input capacitance...

In this paper, we propose a multistage transimpedance amplifier (TIA) based on the local negative feedback technique. Compared with conventional global-feedback technique, proposed TIA has advantages of wider bandwidth, and lower power dissipation. The schematic characteristics circuit are described. Moreover, employs inductive peaking to increase bandwidth. is implemented using 65 nm complemen...

Spatial and temporal variations in network bandwidth constraints constitute serious challenges to the multicast distribution of real-time video content. This paper presents a video multicast algorithm that combines multi-layered video encoding with feedback-based source adaptation in order to address varying bandwidth constraints in a multicast tree. The proposed algorithm uses a novel credit-b...

Orthogonal frequency division multiplexing (OFDM) has become a promising method for many wireless communication applications. However, one main drawback of OFDM systems is the high peak-to-average power ratio (PAPR). Selected mapping (SLM) is a well-known technique to decrease the problem of high PAPR in OFDM systems. In this method, transmitter is obliged to send some bits named side informati...

In this paper, a state feedback H¥ controller is proposed in order to design an active queue management (AQM) system based on congestion control algorithm for networks supporting TCP protocols. In this approach, the available link bandwidth is modeled as a time-variant disturbance. The purpose of this paper is to design a controller which is capable of achieving the queue size and can guarantee...