Title :
Hsdpa 14,4 Mbps Mobiles - Realistic Throughputs Evaluation
Author :
Landre, Jean-Baptiste ; Saadani, Ahmed
Author_Institution :
Orange Labs., Issy-Les-Moulineaux
Abstract :
The HS-DSCH uses multicodes and 16 QAM modulation to achieve high throughput for high capability mobiles. Passing through a frequency selective channel, the MAI arises due to the orthogonality loss between spreading codes. The advanced receivers in mobiles are needed to mitigate these interferences. Realistic perlormance of future HSDPA "14,4 Mbps" mobiles are shown in this paper. A new kind of simulation method, based on existing drive test measurements, is used. The measurements are combined to link level simulation results for different linear receivers to obtain reliable performance estimation. Simulation results show that using the rake receiver the throughput does not exceed 3Mbps. However, introducing the LMMSE it can reach 6Mbps with a single receiver antenna. It can be up to 8 Mbps lor the Rx diversity case.
Keywords :
equalisers; interference suppression; least mean squares methods; mobile radio; quadrature amplitude modulation; radio receivers; radiofrequency interference; receiving antennas; HS-DSCH; LMMSE equalizer; QAM modulation; frequency selective channel; high throughput mobile receiver; interference mitigation; link level simulation; orthogonality loss; rake receiver; receiver antenna; reliable performance estimation; spreading code; Antenna measurements; Fading; Frequency; Multiaccess communication; Multipath channels; Multiple access interference; Quadrature amplitude modulation; RAKE receivers; Testing; Throughput;
Conference_Titel :
Vehicular Technology Conference, 2008. VTC Spring 2008. IEEE
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-1644-8
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2008.468
