Title :
Performance evaluation of a WLAN radio subsystem based on the RAKE receiver using measured channel delay profiles
Author :
Cacopardi, Saverio ; Frescura, Fabrizio ; Gatti, Fabrizio ; Reali, Gianluca
Author_Institution :
Ist. di Elettronica, Perugia Univ., Italy
Abstract :
This paper analyses the performance of a DS-SS WLAN in operation. The working condition is simulated by using measured channel delay profiles. The aim of the paper is to investigate the effectiveness of the RAKE processing in a challenging environment such as the indoor one, in particular when propagation is NLOS or when it is LOS but in the presence of a strong multipath phenomenon. The channel estimation is performed by a LSSE algorithm whose computational cost is kept low by the use of a proper spreading sequence. The results obtained show that the adoption of RAKE processing is necessary in a difficult environment
Keywords :
delays; estimation theory; indoor radio; least squares approximations; multipath channels; pseudonoise codes; radio receivers; radiowave propagation; spread spectrum communication; wireless LAN; DS-SS WLAN; LOS propagation; LSSE algorithm; NLOS propagation; RAKE receiver; WLAN radio subsystem; channel delay profiles; channel estimation; computational cost; indoor environment; performance evaluation; spreading sequence; strong multipath phenomenon; Delay; Fading; Frequency; Local area networks; Multipath channels; Performance analysis; Protocols; Spread spectrum communication; Statistics; Wireless LAN;
Conference_Titel :
Spread Spectrum Techniques and Applications Proceedings, 1996., IEEE 4th International Symposium on
Conference_Location :
Mainz
Print_ISBN :
0-7803-3567-8
DOI :
10.1109/ISSSTA.1996.563611
