Performance of Packet Combining ARQ Error Control in a TDMA SC-FDE System

2010 IEEE 72nd Vehicular Technology Conference - Fall

et al. 2010

Self Cite

This paper considers the use of a code combining hybrid ARQ scheme (Automatic Repeat reQuest) on a TDMA (Time Division Multiple Access) system. A multi-rate turbo-code is proposed to implement the H-ARQ scheme, allowing improved performances. This paper analyzes the energy per packet successfully received, the packet delay and goodput performances for the TDMA system on a HAP (High Altitude Platform). Analytical models were used to define a constrained energy optimization problem, where the minimum transmission power is calculated based on the goodput and delay constraints. Analytical results were validated through simulations for a typical HAP Network uplink channel. 1

Section: Delay Analysismentioning

confidence: 99%

“…It was also assumed that the communications round trip time is lower than the frame duration. It can be shown that (see [12])…”

Section: Delay Analysismentioning

confidence: 99%

Energy Per Useful Packet Optimization on a TDMA HAP Channel

Ganhao

Pereira

2010 IEEE 72nd Vehicular Technology Conference - Fall

et al. 2010

Self Cite

“…However, the information from lost packets could be reused to enhance data reception. For such reason, several techniques were proposed to cope with lost packets, either due to errors [1]- [3] or to collisions [4], [5].…”

Section: Introductionmentioning

confidence: 99%

“…the transmission from the mobile terminal to the base station, is Single-Carrier with Frequency-Domain Equalization (SC-FDE) [8], [9]. Several techniques to cope with lost packets in SC-FDE were proposed, namely Packet Combining (PC) [2] and Multipacket Reception (MPR) [10], [11] techniques; both techniques have significant throughput and delay improvement [3], [12]- [15].…”

Section: Introductionmentioning

confidence: 99%

Analytical Evaluation of Iterative Packet Combining and Multipacket Detection Schemes for SC-FDE

Ganhao

Dinis

2011 IEEE Vehicular Technology Conference (VTC Fall)

2011

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Packet Combining (PC) and Multipacket Reception (MPR) techniques have great potential to deal with lost packets since both take full advantage of the signals associated to all failed transmission attempts. However, their performance evaluation in practical systems is difficult because lengthy simulations are needed to obtain the packet error rates for specific channel conditions. The paper presents an analytical tool to obtain the Bit Error Rate (BER) and Packet Error Rate (PER) performances for Packet Combining (PC), Multipacket Reception (MPR) and the hybrid of both schemes, based on Iterative Block Decision Feedback Equalization (IB-DFE) receivers for Single-Carrier with Frequency-Domain Equalization (SC-FDE). A set of simulation results show that the proposed analytical approach has accurate Bit Error Rate (BER) and Packet Error Rate (PER)results with a simple and relatively fast method. 1

“…The use of H-ARQ techniques improves the network throughput compared to conventional ARQ technique because the packet error probability after retransmission i (p i ) is usually lower than p i−1 . In fact, it reduces the average packet delay, although the minimum delay is always higher than the average time to reach a MT's slot [4].…”

Section: Introductionmentioning

confidence: 99%

Performance Comparison of Diversity Combining ARQ Error Control Schemes with Multi-Packet Detection Schemes

Pereira

2010 Proceedings of 19th International Conference on Computer Communications and Networks

Dinis

et al. 2010

Self Cite

Lost packets, either due to errors or collisions, are usually discarded and need to be retransmitted, leading to performance losses. In this paper we compare the performance of two different approaches to cope with lost packets. One alternative is a multi-packet detection approach able to separate up to Q max mobile terminals transmitting in one slot. The other alternative is a low-complexity soft combining ARQ scheme (Automatic Repeat reQuest) employed in a TDMA (Time Division Multiple Access) architecture. This paper evaluates the uplink non-saturated packet delay and goodput for a Poisson traffic generator. Our analytical results are validated by simulation using joint PHY (physical layer) and MAC (Medium Access Control) behavior. 1