{"product_id":"multiple-access-interference-characterization-for-matthew-g-glen-9781288285792","title":"Multiple Access Interference Characterization for Direct-Sequence Spread-Spectrum Communications Using Chip Waveform Shaping","description":"The modern world has an increasing demand for wireless multiple access communications; direct-sequence spread-spectrum multiple access (DS\/SSMA) systems comprise many of these communication systems. A better understanding of multiple access interference (MAI) effects on DS\/SSMA system performance, specifically their impact on overall system bit error rate (BER), enables system designers to minimize MAI degradation and produce greater DS\/SSMA system capacity. This research characterizes MAI effects on DS\/SSMA system performance through simulation in Matlab?, and explores the impact of multiple access code selection, chip waveform shaping, and multiple access code length on BER for both synchronous and asynchronous multiple access networks. In addition, the simulated DS\/SSMA model permits rapid research into the effects of additional factors on BER. Prior to experimental testing, model validation is conducted through single user trials and by comparison with existing research for similar system designs. For synchronous and asynchronous networks, Gold coding improves BER by 7.5 and 4.0 dB, respectively, relative to aperiodic random spreading codes. Synchronous network results show that chip waveform shaping provides no significant BER improvement for the Blackman or Lanczos shapes. However, asynchronous network results show a potential BER improvement for Blackman and Lanczos shapes. Increasing code length from 31 to 511 resulted in a 7.5 dB BER improvement. Collectively, these results directly relate changes in BER to waveform cross-correlation statistics.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e Matthew G. Glen\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 1288285795\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9781288285792\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Biblioscholar\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 11\/12\/2012\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 82\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.36lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 9.69h x 7.44w x 0.17d","brand":"Matthew G. Glen","offers":[{"title":"Paperback","offer_id":44065350516991,"sku":"9781288285792","price":57.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_64fdfe6f-a71e-42d9-94e6-81c67a08324a.jpg?v=1685400883","url":"https:\/\/www.whiterainbookhouse.com\/products\/multiple-access-interference-characterization-for-matthew-g-glen-9781288285792","provider":"WR Book House","version":"1.0","type":"link"}