Linear Multiuser Detectors using Linear, Circular and Concentric Circular Antenna Arrays in CDMA Communication Systems
نویسندگان
چکیده
The suitable use of an antenna array at the base station of a communication system results in improved Signal to Interference Ratio (SIR). In this paper, Linear Array (LA), Circular Array (CA) and Concentric Circular Antenna Array (CCAA) are used at the base station of a direct sequence code division multiple access (CDMA) systems. To suppress multiple access interference (MAI), the proposed scheme utilizes the spatial distribution of users as well as the time domain processing. The results show the significant improvement in capacity of CDMA system employing joint use of antenna array and multiuser detectors. Key-Words: Code Division Multiple Access, Bit error rate, Signal to Noise ratio, Multiuser detector, Antenna array
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