Learn More
Software defined radios (S D R) are highly config-urable hardware platforms that provide the technology for realizing the rapidly expanding third (and future) generation digital wireless communication infrastructure. Many sophisticated signal processing tasks are performed in a SDR, including advanced compression algorithms, power control, channel(More)
—We develop a reduced-complexity approach for the detection of coded shaped-offset quadrature phase-shift keying (SOQPSK), a highly bandwidth-efficient and popular constant-envelope modulation. The complexity savings result from viewing the signal as a continuous-phase modulation (CPM). We give a simple and convenient closed-form expression for a recursive(More)
A narrowband channel model for multipath fading in aeronautical telemetry applications is described. This channel is composed of a line-of-sight signal, a specular reflection whose strength is 20% to 80% that of the line-of-sight signal, and a diffuse multipath component whose power is 10 to 20 dB less than that of the line-of-sight signal. Thus the channel(More)
Developing evidence-based practice skills requires a familiarity with the language and terminology of clinical research. Few articles discuss concepts, such as effect size, that must be understood to determine if the findings of studies are clinically meaningful. Clinically meaningful results of studies are determined by the effect size of an intervention.(More)
The purpose of this study was to identify how abused women use hope and to determine whether hope is a coping mechanism in their relationship with the abusers. Four focus group sessions were conducted with a sample of 24 women using a phenomenological methodology. The data analysis indicated that abused women maintain hope in four major dimensions: hope for(More)
This article is the first in a new column focusing on evidence-based practice (EBP) in psychiatric mental health nursing. The EBP movement was strongly influenced by a British epidemiologist, Dr. Cochrane, who advocated care based on randomized clinical controlled trials in the late 1900s. Although the majority of the EBP movement is directed toward(More)
—This paper describes the use of a polyphase filter-bank to perform the interpolations required for symbol timing synchronization in a sampled-data receiver. The polyphase filter-bank possesses advantages over architectures based on separate matched and interpolation filters. Interpolations are realized by filterbank index selection and a separate(More)
Software defined radios (SDR) are highly configurable hardware platforms that provide the technology for realizing the rapidly expanding third (and future) generation digital wireless communication infrastructure. While there are a number of silicon alternatives available for implementing the various functions in a SDR, field programmable gate arrays(More)