ET TOLBA Mohamed⁴, SAOUDI Samir^1,2, VISOZ Raphaël³

Article de revue avec comité de lecture

EURASIP journal on wireless communications and networking, april 2012, vol. 148

2012

Transmit power control (TPC) is used in high speed uplink packet access (HSUPA) to compensate for the near far effect which degrades system performance. However, its use in joint application with turbo coding, and hybrid automatic repeat request (Hybrid-ARQ) is very prohibitive and time consuming. In this article, we propose a simplified simulation methodology for power controlled HSUPA with Hybrid-ARQ Chase combining considering the effect of channel estimation on the system performance. The proposed method was tested on Rake and chip-level linear minimum mean squared error (LMMSE) receivers. Simulation results show that the CPU time taken to reach the required performance is significantly reduced. Moreover, when the channel estimation is taken into account with an important number of pilot symbols, the system performance is close to that obtained with perfect channel acknowledgement (PCA).

1 : SC - Dépt. Signal et Communications (Institut Mines-Télécom-Télécom Bretagne-UEB)
2 : Lab-STICC - Laboratoire en sciences et technologies de l'information, de la communication et de la connaissance (UMR CNRS 6285 - Télécom Bretagne - Université de Bretagne Occidentale - Université de Bretagne Sud)
3 : Orange labs - Issy les moulineaux (Orange)
4 : INPT - Institut national des postes et télécommunications de Rabat (.)

HSUPA, Hybrid-ARQ, Chase Combining;, TPC, LMMSE, Channel estimation, Pilot symbols

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