Resource allocation in OFDMA

For last few decades, Orthogonal Frequency Division Multiplexing has been recognized not only as an efficient modulation format but also as an effective way of supporting multiple access. The orthogonal frequency division multiple access (OFDMA) principle employs assignment of orthogonal sub-carrier sets to a number of the network users and has been adopted in Metropolitan Area Networks (IEEE 802.16.std), Wide Area Networks such as Ultra Mobile Broadband for 3GPP Long Term Evolution.

Whenever an OFDMA operates in a time-frequency dispersive radio channel the link adaptation provides a benefit in terms of any system performance metric by employing time, frequency and multi-user diversities. The aim of the project is elaboration of low complexity (practical) link adaptation algorithms with QoS constraints (such as fairness, delay etc.) for OFDMA.

Contacts

Contact person: Natalia Ermolova