TY - JOUR
T1 - Coherent code tracking for spatial transmit diversity DS-CDMA systems
AU - Rice, G.W.
AU - Stirling, I.G.
AU - Sewart, R.W.
PY - 2005
Y1 - 2005
N2 - Spatial transmit diversity schemes are now well integrated into third-generation cellular mobile communication system specifications. When DS-CDMA-based technology is deployed in typical macro- and microcell environments, multipath diversity and spatial diversity may be exploited simultaneously by a 2D RAKE receiver. The work presented in this paper focuses on taking advantage of spatial transmit diversity in synchronising the 2D RAKE structure. We investigate the use of coherent and noncoherent techniques for tracking the timing parameters of each multipath component. It is shown that both noncoherent and coherent techniques benefit from transmit diversity. Additionally the performance gap between these two techniques increases with the number of antennas.
AB - Spatial transmit diversity schemes are now well integrated into third-generation cellular mobile communication system specifications. When DS-CDMA-based technology is deployed in typical macro- and microcell environments, multipath diversity and spatial diversity may be exploited simultaneously by a 2D RAKE receiver. The work presented in this paper focuses on taking advantage of spatial transmit diversity in synchronising the 2D RAKE structure. We investigate the use of coherent and noncoherent techniques for tracking the timing parameters of each multipath component. It is shown that both noncoherent and coherent techniques benefit from transmit diversity. Additionally the performance gap between these two techniques increases with the number of antennas.
KW - DS-CDMA
KW - 2D RAKE
KW - transmit diversity
KW - coherent delay-locked loop
UR - http://www.hindawi.com/GetPDF.aspx?doi=10.1155/ASP.2005.2739
UR - http://dx.doi.org/10.1155/ASP.2005.2739
U2 - 10.1155/ASP.2005.2739
DO - 10.1155/ASP.2005.2739
M3 - Article
SN - 1110-8657
VL - 2005
SP - 2739
EP - 2747
JO - EURASIP Journal on Advances in Signal Processing
JF - EURASIP Journal on Advances in Signal Processing
IS - 16
ER -