Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 4 of 4 for “"Signature sequences"”.
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On rate capacity and signature sequence adaptation in downlink of MC-CDMA system
… system: rate capacity and adaptation of users' signature sequences. Both of them are studied for the downlink communication scenario with multi-code scheme. The purpose of studying rate capacity is to understand the potential of applying MC-CDMA technique for high speed wireless data …
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A Code Division Multiple Access Communication System for the Low Frequency Band
… by phase modulating their transmissions with signature sequences. Our LF/CDMA scheme is different in that each user's signature sequence set consists of M orthogonal sequences and thus log(,2)M bits of information are transmitted by choosing among the signature sequences. Additionally, the …
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Performance of Ds/ssma Communications in Impulsive Channels (Nongaussian, Hard Limiter)
… here to systems utilizing short spreading sequences. Computationally simple methods are proposed for approximating the average error probability of the linear and hard-limiting correlation receivers when the length of the signature sequences is large. Furthermore, for linear and nonlinear …
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Spectrum Sensing in Cognitive Radio Networks
Given the ever-growing demand for radio spectrum, cognitive radio has recently emerged as an attractive wireless communication technology. This dissertation is concerned with developing spectrum sensing algorithms in cognitive radio networks where a single or multiple cognitive radios (CRs) assist …