Introduction: The improved SNR at 7T provides significant advantages for both H and lower gyromagnetic nuclei such as P, Na and C (X nuclei). Double resonant volume head coils, based on both birdcage (1-3) and TEM (4) designs have been previously used at lower magnetic fields. However at 7T, transceiver phased arrays provide significant advantages for both B1 homogeneity and transmit efficiency...

—In this paper, we analyze a channel-hopping scheme under a smart jamming attack in wireless military communication systems. In particular, we focus on the effect of using multiple transceivers in channel-hopping schemes and compare them with the case of a single transceiver. To evaluate the performance of the multiple transceiver system, we present an analytical model that can calculate the a...

Implanted transducers for functional electrical stimulation (FES) powered by inductive links are subject to conflicting requirements arising from low link eflciency, a low power budget and the need for protection of the weak signals against strong RF electromagneticJields. We propose a solution to these problems by partitioning the RF transceiver and sensor/actuator functions onto separate inte...

In this paper, an effort has been made to illustrate the performance of MIMO system under the effect of transceiver impairments on channel capacity with varying antenna element. The capacity of ideal MIMO channels depends upon number of antenna used in antenna array. At small SNR values capacity increases linearly. When there are distortions from physical transceiver impairments MIMO channels h...

A number of attempts have been made in an effort to combine the advantages of line-of-sight and diffuse configurations for indoor optical wireless communications via sophisticated combinations of elements that are characteristic for these architectures. A different approach has been followed in the present investigation, namely, developing a transceiver capable of operating in both configuratio...

Absfracf-An approach to the implementation of asynchronous and timing jitter insensitive data echo cancellation is described. This approach introduces a small amount of jitter in the transmitted data signal, or alternatively in the received signal sampling, and uses a simple digital phase-locked loop together with the storage of two sets of echo canceler coefficients. The effect of derived timi...

A flexible optical node architecture employing software-defined modulation-flexible universal transceivers is presented for beyond 100G flexible grid optical networks. Hitless spectrum defragmentation using synchronous bandwidth-variable WSS control is supported for inservice resource optimization. 1. Flexible optical node architecture employing modulation-flexible shared universal transceivers...

Use of electronic animal identification technologies by livestock managers is increasing, but performance of these technologies can be variable when used in livestock production environments. This study was conducted to determine whether 1) read distance of low-frequency radio frequency identification (RFID) transceivers is affected by type of transponder being interrogated; 2) read distance va...

Discrete multitone modulation transceivers (DMTs) have been shown to be very useful for data transmission over frequency selective channels. The DMT scheme is realized by a transceiver that divides the channel into subbands. The efficiency of the scheme depends on the frequency selectivity of the transmitting and receiving filters. The receiving filters with good stopband attenuation are also d...