Title :
Space-time signal processing utilizing multistep joint detection for the uplink of time division CDMA
Author :
Weckerle, M. ; Weber, T. ; Baier, P.W. ; Oster, J.
Author_Institution :
Res. Group for RF Commun., Kaiserslautern Univ., Germany
Abstract :
In the TDD mode of UTRA (UMTS Terrestrial Radio Access) and IMT-2000 (International Mobile Telecommunications-2000) the multiple access scheme TD-CDMA (time division CDMA) is utilized. The preferred mode of detection in TD-CDMA is joint detection (JD). In this paper, a new multistep joint detection (MSJD) approach for TD-CDMA is presented, which allows an enhancement of the spectrum efficiency by improving the receiver performance especially in scenarios with the number of simultaneous connections, i.e. the system load, being close to the spreading factor. It is further shown that this MSJD approach can be easily combined with adaptive array processing in the uplink of TD-CDMA, where it can benefit from the advantage of adaptive arrays
Keywords :
array signal processing; cellular radio; code division multiple access; iterative methods; signal detection; space-time adaptive processing; time division multiplexing; IMT-2000; International Mobile Telecommunications-2000; TD-CDMA uplink; TDD mode; UMTS Terrestrial Radio Access; UTRA; adaptive array processing; adaptive arrays; improved receiver performance; multiple access scheme; multistep joint detection; space-time signal processing; spectrum efficiency enhancement; spreading factor; system load; time division CDMA; Adaptive arrays; Adaptive signal processing; Array signal processing; Channel estimation; Interference; Multiaccess communication; Radio frequency; Signal processing; Signal processing algorithms; Time division multiple access;
Conference_Titel :
Communication Technology Proceedings, 2000. WCC - ICCT 2000. International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-6394-9
DOI :
10.1109/ICCT.2000.890911
