Sökning: "direct-sequence code division multiple access DS CDMA"
Visar resultat 1 - 5 av 15 avhandlingar innehållade orden direct-sequence code division multiple access DS CDMA.
1. Coding for multiple-access and fading channels
Sammanfattning : This thesis treats some information-theoretical and coding aspects of communication over multiple-access and fading channels. It consists of a general introduction and seven papers. In code-division multiple-access (CDMA) communication, many users have access to the channel simultaneously. LÄS MER
2. On synchronization of CDMA systems
Sammanfattning : .... LÄS MER
3. Successive Interference Cancellation in DS-CDMA Systems
Sammanfattning : There is every indication that direct-sequence code division multiple access (DS-CDMA) will be one of the multiple access schemes for the third generation wireless mobile systems. CDMA is a flexible multiple access method suitable for supporting many new services (speech, data, video, etc), which are becoming increasingly important for mobile communications. LÄS MER
4. Coding and Modulation for Wideband CDMA
Sammanfattning : Wideband CDMA (Code Division Multiple Access) is one of the key technologies for future mobile communication systems. This thesis studies various coding and transmission methods for wideband CDMA communications. In a cellular environment, the system performance depends on the interference from other cells. LÄS MER
5. Interference Cancellation for DS/CDMA Systems in Flat Fading Channels
Sammanfattning : 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. LÄS MER