Reduced-Complexity Maximum-Likelihood Detection in Downlink SDMA Systems

The literature of up-link SDMA systems is rich, but at the time of writing there is a paucity of information on the employment of SDMA techniques in the down-link. Hence, in this paper a Space Division Multiple Access (SDMA) down-link (DL) multi-user communication system invoking a novel low-complexity Maximum Likelihood (ML) space-time detection technique is proposed, which can be regarded as an advanced extension of the Complex Sphere Decoder (CSD). We demonstrate that as opposed to the previously published variants of the CSD, the proposed technique may be employed for obtaining a high effective throughput in the so-called “over-loaded” scenario, where the number of transmit antennas exceeds that of the receive antennas. The proposed method achieves the optimum performance of the ML detector even in heavily over-loaded scenarios, while the associated computational complexity is only moderately increased. As an illustrative example, the required Eb/N0 increased from 2 dB to 9 dB, when increasing the normalized system load from unity, representing the fully loaded system, to a normalized load of 1.556

On the Radio: Using Radio in ESL Classes

Recent studies have brought about an increased awareness of the need for better listening comprehension skills among ESL students, and as a result there is heightened interest in the use of live language in the classroom. Radio is a highly accessible and versatile source of such, providing the student with a limitless supply of current language. This paper focuses on the use of radio as a live language tool. Included in the paper are a rationale for using radio; a description of the author\u27s work with commercials, news and weather reports; specific lesson plans; guidelines for using radio as a teaching mode; and samples of student work

Real-time data compression of broadcast video signals

A non-adaptive predictor, a nonuniform quantizer, and a multi-level Huffman coder are incorporated into a differential pulse code modulation system for coding and decoding broadcast video signals in real time

Fostering Entry Level Practitioner Knowledge, Confidence, and Competence in Trauma-Informed Care Application

Trauma is pervasive worldwide and is associated with poor health outcomes if left unaddressed, however, a gap in practice continues to exist in the implementation of trauma-informed care (TIC). Occupational therapy practitioners will encounter individuals, communities, and populations influenced by trauma, which warrants the need for TIC to improve overall service delivery across the lifespan. However, TIC is currently not systematically integrated into any Accreditation Council for Occupational Therapy Education (ACOTE) occupational therapy educational standards. The purpose of this study was to design, implement, and evaluate a TIC application-based workshop for a sample of entry-level occupational therapy doctorate (OTD) students. The program evaluation component utilized pre-and post- survey design with Likert, forced choice, short-answer, and open-ended questions related to the delivery of content from the trauma-informed care workshop. Outcomes were evaluated through descriptive statistics and content analysis examining participants’ perception of change in TIC knowledge, confidence, and competence in application to occupational therapy practice. Overall, participants’ perception of TIC application knowledge, confidence, and competence improved following the workshop. The workshop and its associated program evaluation built on prior work across healthcare disciplines establishing the need for proactive TIC education. The current study supports the need for TIC to be intentionally situated within occupational therapy academia to prepare occupational therapy practitioners to understand and apply TIC across the lifespan and practice settings to improve patient outcomes and experiences

Mary Ann Barnes Williams collection of papers, 1931-1971

Correspondence and reminiscences, relating to General George Custer, the Battle of the Little Big Horn, forts Buford, Mandan, and Abraham Lincoln, Sakakawea, frontier life, and North Dakota history; and newspaper articles concerning Williams