6533b824fe1ef96bd1280875

RESEARCH PRODUCT

Link Adaptation Thresholds for the IEEE 802.16 Base Station

Henrik MartikainenVitaliy TykhomyrovOleksandr Puchko

subject

IEEE 802Computer sciencebusiness.industryRetransmissionComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSReal-time computingHybrid automatic repeat requestLink adaptationData_CODINGANDINFORMATIONTHEORYSpectral efficiencyBase stationLink levelbusinessComputer networkCoding (social sciences)

description

The IEEE 802.16 technology defines a number of modulation and coding schemes that the base station can use to achieve the best tradeoff between the spectrum efficiency and the resulting application level throughput. However, the 802.16 specification does not define any particular link level adaptation algorithm, neither does it specify the SNR thresholds to switch between modulation and coding schemes. In this paper we consider a link adaptation model and conduct a number of simulation runs to find transition thresholds for ARQ and HARQ retransmission mechanisms. All the simulations are done with the 802.16 extension for the NS-2 simulator.

https://doi.org/10.4108/icst.valuetools2008.4369