Capacity bounds for MIMO microwave backhaul links affected by phase noise

• We present bounds and a closed-form high-SNR expression for the capacity ofmultiple-antenna systems affected by Wiener phase noise. Our results aredeveloped for the scenario where a single oscillator drives all theradio-frequency circuitries at each transceiver (common oscillator setup), theinput signal is subject to a peak-power constraint, and the channel matrix isdeterministic. This scenario is relevant for line-of-sight multiple-antennamicrowave backhaul links with sufficiently small antenna spacing at thetransceivers. For the 2 by 2 multiple-antenna case, for a Wiener phase-noiseprocess with standard deviation equal to 6 degrees, and at the medium/high SNRvalues at which microwave backhaul links operate, the upper bound reported inthe paper exhibits a 3 dB gap from a lower bound obtained using 64-QAM.Furthermore, in this SNR regime the closed-form high-SNR expression is shown tobe accurate.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik -- Kommunikationssystem (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering -- Communication Systems (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)

Nyckelord

Wiener process

microwave backhaul links

capacity

Phase noise

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art (ämneskategori)

ref (ämneskategori)