A 2.4-GHz CMOS on-off keying (OOK) transmitter is developed for applications that require high data rate over 10Mbps in the area of wireless body area network (WBAN) and medical implant communication service (MICS). A novel analog pulse-shaping circuit for reducing power consumption and circuit complexity is employed for the OOK transmitter. Fabricated in 0.13μm CMOS, the transmitter core exclu...

This paper investigates how to increase communication distance of underwater wireless optical communication system. In order to analyze the communication distance of UWOC, the performance of optical transmitter and receiver, underwater channel characterization and modulation schemes were discussed. The communication link model was established based the on Beer-Lambert Law. The suitable transmit...

In this paper, we consider multiple channels and wireless nodes with multiple transceivers. Each node assigns one transmitter at each available channel. For each assigned transmitter the node decides the power level and data rate of transmission in a distributed fashion, such that certain Quality of Service (QoS) demands for the wireless node are satisfied. More specifically, we investigate the...

In wireless communication fading of channels is the serious cause of the received degraded signals. The effect of fading can be minimized by using various time and space domain techniques. However, space domain techniques are preferred over the others due to its advantages. In this paper, comparison of the wireless MIMO system under Almouti‘s and maximum ratio combining schemes is presented. Ba...

the last two decades, wireless communications has gained enormous popularity, offering attractive options for many personal and organizational communication needs due to major intrinsic characteristics such as flexibility, cost effectiveness, and mobility. Two transmission techniques for wireless communications have been deployed so far; Radio Frequency (RF) and Optical Communications. While th...

Optical nanoantennas tailor the transmission and reception of optical signals. Owing to their capacity to control the direction and angular distribution of optical radiation over a broad spectral range, nanoantennas are promising components for optical communication in nanocircuits. Here we measure wireless optical power transfer between plasmonic nanoantennas in the far-field and demonstrate c...

1. Introduction To meet the challenge of 3D-intergration in future ULSI, global wireless interconnection (interconnect distance above 300 µm) which utilizes electromagnetic wave transmission by using integrated antenna and ultra wideband (UWB) transceiver system has been proposed [1, 2] as shown in Fig. 1. Among the different techniques for UWB system, impulse radio based UWB uses very short Ga...

As the demand for high speed and reliable wireless communication increases, the importance of having a linear transmitter has enhanced. Distortions created by the transmitter, such as power amplifier nonlinearity and I/Q imbalance, diminish the fidelity and limit the performance of wireless systems, if left undealt with. Among the techniques commonly used to mitigate these distortions, digital ...

In this paper, we address the design problem of throughput and energy-efficient Medium Access Control (MAC) in wireless sensor networks. First, we assume a static network model with a fixed assignment of disjoint transmitter and receiver node groups. To obtain reliable channel feedback in multi-destination sensor networks, we propose the Group TDMA algorithm to separate in time distinct transmi...