Title :
System-level evaluation of space-time processing for EDGE
Author :
de Almeida, A.L.F. ; Cavalcanti, F.R.P. ; Fernandes, C.E.R. ; Mota, J.C.M. ; de Sousa, W.M., Jr.
Author_Institution :
Wireless Telecom. Res. Group, Fed. Univ. of Ceara, Fortaleza, Brazil
Abstract :
We perform a system-level evaluation of conventional and decoupled space-time processing strategies for the enhanced data rates for global evolution (EDGE) system. The main idea of decoupled space-time (D-ST) processing is to enhance the performance of the temporal equalizer by separating cochannel interference (CCI) reduction from inter-symbol interference (ISI) suppression in two stages. Here, we employ a DDFSE as the temporal equalizer, which is a promising reduced-complexity equalization scheme for EDGE. In this contribution, the bit error rate (BER) performance of D-ST-DDFSE is accessed at both link- and system-levels. Concerning the system-level evaluation, an estimation of the output signal-to-interference-ratio (SIR) is performed for different load conditions and channel profiles such as the COST259 typical urban (TU) and bad urban (BU). Our objective is to show the potential gains of space-time processing in EDGE for extremely tight reuse patterns.
Keywords :
cellular radio; cochannel interference; decision feedback equalisers; error statistics; interference suppression; intersymbol interference; radio links; space-time adaptive processing; BER performance; CCI reduction; COST259 typical urban channel; D-ST-DDFSE; DDFSE; EDGE; ISI suppression; SIR estimation; bad urban channel; bit error rate; channel profiles; cochannel interference; data rates; decisi on- feedback equalizer; decoupled space-time processing; global evolution system; inter-symbol interference; link-level evaluation; load conditions; output signal-to-interference-ratio; reduced-complexity equalization; reuse patterns; space-time processing; system-level evaluation; temporal equalizer; Bit error rate; Degradation; Equalizers; Filters; Interchannel interference; Intersymbol interference; Performance evaluation; Radiofrequency interference; Signal to noise ratio; Telecommunications;
Conference_Titel :
Vehicular Technology Conference, 2002. Proceedings. VTC 2002-Fall. 2002 IEEE 56th
Print_ISBN :
0-7803-7467-3
DOI :
10.1109/VETECF.2002.1040702
