Downlink Transmit Power Allocation in Soft Fractional Frequency Reuse Systems

[AlexSSS]

ETRI Journal, Volume 33, Number 1, February 2011

Downlink Transmit Power Allocation in Soft Fractional Frequency Reuse Systems

Downlink transmit power allocation schemes are
proposed for soft fractional frequency reuse (FFR) in loose
and tightly coordinated systems. The transmit powers are
allocated so that the loss of spectral efficiency from the soft
FFR is minimized, and the required cell edge user
throughput is guaranteed. The effect of the soft FFR on
spectral efficiency is evaluated depending on the power
allocation schemes and the number of subbands. Results
show that the loss of spectral efficiency from the soft FFR
can be reduced by configuring an appropriate number of
subbands in the loosely coordinated systems. In tightly
coordinated systems, results show that the loss of spectral
efficiency can be minimized regardless of the number of
subbands due to its fast coordination.

Direct link: http://etrij.etri.re.kr/Cyber/servle...-1296434785255

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