Optimal power allocation for pilot-assisted interference alignment in MIMO interference networks: Test-bed results
Paper i proceeding, 2015

This paper addresses channel training and data communication over multi-input multi-input (MIMO) interference networks. We consider a pilot-assisted interference alignment scheme in which part of radio resources are allocated to channel training and the remaining resources are used for data transmission. A more accurate channel estimation can be obtained by increasing pilot transmission power. Since each transmitter has limited energy budget, this implies that less power is available for data transmission. Clearly, there is a trade off between the allocated power for channel training and the one for data communication. In order to investigate this trade off, first we compute an achievable sum-rate, and next we find the optimum power allocation to pilot transmission and data transmission. Finally, we verify these theoretical results with experimental measurements on USRP-based test-bed.

pilot-assisted channel training

OFDM

USRP test-bed

Interference alignment

power allocation

Författare

Nima N. Moghadam

Kungliga Tekniska Högskolan (KTH)

Hamed Farhadi

Signaler och system, System- och reglerteknik, Reglerteknik

Per Zetterberg

Kungliga Tekniska Högskolan (KTH)

IEEE International Conference on Digital Signal Processing, DSP 2015, Singapore, 21-24 July

585-589

Ämneskategorier

Telekommunikation

Kommunikationssystem

Signalbehandling

DOI

10.1109/ICDSP.2015.7251941

ISBN

978-1-4799-8058-1