Search for dissertations about: "multiuser channels"
Showing result 1 - 5 of 23 swedish dissertations containing the words multiuser channels.
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1. Interference Cancellation for DS/CDMA Systems in Flat Fading Channels
Abstract : This thesis investigates interference cancellation in direct-sequence codedivision multiple access (DS/CDMA) systems that support multiple data rates.Two approaches for implementing multiple data rates are considered. Oneis the use of mixed modulation. The second is the use of parallel channels. READ MORE
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2. Multirate Schemes and Multiuser Decoding in DS/CDMA Systems
Abstract : Direct-Sequence Code Division Multiple-Access (DS/CDMA) has for some yearsbeen considered as a candidate for future personal and mobile communications.The reasons are mainly the properties of universal frequency reuse andthe multi-path mitigation. READ MORE
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3. Channel Coding and Multiuser Detection for CDMA and Wireless Communications
Abstract : Next generation wireless communication systems will require support for many different applications as well as improved quality compared to existing second generation systems like GSM (Global System for Mobile communications). Since there will be more users and higher data rates, the capacity must also be increased. READ MORE
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4. Synchronization and data detection in long-code CDMA systems / Pei Xiao %C Göteborg
Abstract : .... READ MORE
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5. Detection for multiple input multiple output channels : analysis of sphere decoding and semidefinite relaxation
Abstract : The problem of detecting a vector of symbols, drawn from a finite alphabet and transmitted over a multiple-input multiple-output (MIMO) channel with Gaussian noise, is of central importance in digital communications and is encountered in several different applications. Examples include, but are not limited to; detection of symbols spatially multiplexed over a multiple-antenna channel and the multiuser detection problem in a code division multiple access (CDMA) system. READ MORE