Title :
Precombining adaptive-order equalizer for downlink MAI suppression in CDMA systems
Author_Institution :
Singapore Res. Lab., Sony Electron. (S) Pte. Ltd., Singapore, Singapore
Abstract :
A new MAI suppression method - precombining adaptive-order equalizer - is proposed for a cellular CDMA system downlink. By means of increasing and smoothing the SNR variation of the input signal and optimizing the equalizer order, it greatly improves the performance of the common equalizer-based MAI suppression receivers in low SNR and fading cases. The proposed approach is especially suitable for 3G high-speed downlink packet access (HSDPA) systems. The receiver structure is described and represented mathematically. The receiver performance is evaluated through simulation and compared with common equalizer-based and RAKE receivers.
Keywords :
3G mobile communication; adaptive equalisers; cellular radio; code division multiple access; fading channels; interference suppression; multipath channels; optimisation; packet radio networks; radio access networks; radio receivers; radiofrequency interference; signal detection; smoothing methods; 3G high-speed downlink packet access systems; CDMA downlink; HSDPA system; MAI suppression; RAKE receivers; cellular downlink; multipath fading channels; precombining adaptive-order equalizer; precombining equalizer; signal detection; Downlink; Equalizers; Fading; Multiaccess communication; Multipath channels; Multiple access interference; Proposals; RAKE receivers; Signal to noise ratio; Working environment noise;
Conference_Titel :
Consumer Electronics, 2003. ICCE. 2003 IEEE International Conference on
Print_ISBN :
0-7803-7721-4
DOI :
10.1109/ICCE.2003.1218935
