HARQ for WCDMA enhanced uplink: link level performance in SHO

Bertinelli, Massimo; Malkamaki, E.

doi:10.1109/pimrc.2004.1368842

Cited by 8 publications

(8 citation statements)

References 2 publications

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“…The FPP performance are obtained using the simulator corresponding to the structure presented in Figure 3 which consider hybrid-ARQ Chase combining [13,14]. The TPC process is assumed to be inactive.…”

Section: Fast Performance Prediction Validationmentioning

confidence: 99%

Fast performance prediction of power controlled HSUPA with channel estimation

Et-tolba

Saoudi

Visoz

2012

J Wireless Com Network

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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).

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Section: Fast Performance Prediction Validationmentioning

confidence: 99%

Fast performance prediction of power controlled HSUPA with channel estimation

Et-tolba

Saoudi

Visoz

2012

J Wireless Com Network

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“…The junction of FEC and ARQ is called Hybrid-ARQ (HARQ), which may be done with or without combining techniques. In HARQ schemes, two types of combining techniques are widely used Chase Combining (CC) and Incremental Redundancy (IR) [10], [13]. If a retransmission is necessary in 3G WCDMA systems, the flow of signalization messages is done between UE and RNC (Radio Network Controller), in the data link layer (Layer 2) [6].…”

Section: B Hybrid Automatic Repeat Requestmentioning

confidence: 99%

“…Diverse candidate approaches for enhance 3G DCH capabilities were proposed in recent works. Some of them are the Adaptive Modulation and Codification (AMC) [3]- [4], fast Node-B scheduling [5], fast E-DCH initialization [4], smart antennas systems [6], [7], users admission control [8], shorter TTI (Transmission Time Interval) size [1], [3], [9], Hybrid Automatic Repeat Request (HARQ) [5], [10] and Multi-User Detection (MUD) schemes with Interference Cancellation (IC) [5], [11]- [12].…”

Section: Introductionmentioning

confidence: 99%

Uplink Throughput Enhancements and Delay Reductions in 3G WCDMA Systems Using 3.5G Enhanced Uplink Techniques

Rodrigues

2006

2006 IEEE Ninth International Symposium on Spread Spectrum Techniques and Applications

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“…which is determined by the block error rate (BLER), depends on selected technol ogy (channel coding, interleaving, modulation, and channel impulse response). The BLER is computed by simulating HSUPA technologies with Monte-Carlo simulations [ 1], [ 2].…”

Section: Introductionmentioning

confidence: 99%

Performance prediction of HARQ Chase Combining with power control for HSUPA system

Et-tolba

Saoudi

2012

2012 International Conference on Multimedia Computing and Systems

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Transmit power control (TPC) is used in high speed uplink packet access (HSUPA) to compensate for the near far effect which degrades the system performance. However, the use of power control in joint application with turbo coding, and hybrid automatic repeat request (Hybrid-ARQ) is very prohibitive and time consuming. In this paper, we propose a simplified simulation methodology for power controlled HSUPA with Hybrid-ARQ Chase-Combining considering the channel estimation at the receiver end. Simulation results show 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 acknowledge.

show abstract

HARQ for WCDMA enhanced uplink: link level performance in SHO

Cited by 8 publications

References 2 publications

Fast performance prediction of power controlled HSUPA with channel estimation

Fast performance prediction of power controlled HSUPA with channel estimation

Uplink Throughput Enhancements and Delay Reductions in 3G WCDMA Systems Using 3.5G Enhanced Uplink Techniques

Performance prediction of HARQ Chase Combining with power control for HSUPA system

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