Title :
Analysis of multirate MC-CDMA over multipath channels with delay spread exceeding the guard interval
Author :
Kunnari, Esa ; Iinatti, Jari
Author_Institution :
Center for Wireless Commun., Oulu Univ.
Abstract :
In this paper, a generic performance analysis for the multicode and variable spreading factor (VSF) multirate schemes in a multicarrier code division multiple access (MC-CDMA) system is presented. In addition to the downlink channel, the analysis includes also both the synchronous and asynchronous uplink channels. Furthermore, the analysis takes into account the intersymbol interference (ISI) caused by the multipath delay components exceeding the guard interval, which is commonly omitted in the literature. Numerical results comparing and pointing out notable differences in the error rate performance of the two multirate schemes, different combining techniques, and spreading sequences are presented
Keywords :
code division multiple access; delays; intersymbol interference; mobile radio; multipath channels; asynchronous uplink channels; delay spread; downlink channel; guard interval; intersymbol interference; multicarrier code division multiple access system; multicode multirate schemes; multipath channels; multipath delay; multirate MC-CDMA; spreading sequences; synchronous uplink channels; variable spreading factor multirate schemes; Delay; Downlink; Intersymbol interference; Multiaccess communication; Multicarrier code division multiple access; Multipath channels; OFDM; Peak to average power ratio; Performance analysis; Streaming media;
Conference_Titel :
Global Telecommunications Conference, 2005. GLOBECOM '05. IEEE
Conference_Location :
St. Louis, MO
Print_ISBN :
0-7803-9414-3
DOI :
10.1109/GLOCOM.2005.1578370
