Multilevel type-II HARQ with adaptive modulation control

Bosisio, R.; Spagnolini, Umberto; Bar-Ness, Y.

doi:10.1109/wcnc.2006.1696617

Cited by 5 publications

(1 citation statement)

References 9 publications

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“…Due to its ability to achieve high system throughput, HARQ is considered one of the key technologies for the third generation (3G) wireless communication systems (CDMA 2000 1xEV, WCDMA, HSDPA, etc.). Yet in IEEE 802.15.3 physical (PHY) layer the trellis coded modulation (TCM) is used [1], which prevents the use of efficient code combining scheme due to concerns over complexity in the receiver, which is thus usually proposed with the packet combining Type-I HARQ [27].…”

Section: Introductionmentioning

confidence: 99%

Size Based Throughput Optimization of Dly-Ack Over the Ieee 802.15.3 Networks

Lin¹,

Du²,

Rong³

et al. 2008

PIER

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Abstract-In this paper we study on the one hand under delayedacknowledgement (Dly-ACK) mechanisms the option of using ACK Request to improve system robustness, and on the other hand the incorporation of effective retransmission schemes such as hybrid automatic repeat request (HARQ) to improve system throughput for an IEEE 802.15.3 compliant system. An expression of throughput is derived in terms of system parameters and channel conditions. A constrained optimization problem for system throughput is formulated. It is then solved numerically due to the high degree of nonlinearity in the payload size.Our results indicate that under poor channel conditions, the optimal throughput under HARQ scheme is significantly higher than that with ARQ, and larger payload size is proposed to further improve the performance.

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Section: Introductionmentioning

confidence: 99%