Adaptive subcarrier allocation to a mobile terminal in a...

Details Adaptive subcarrier allocation to a mobile terminal in a... Adaptive subcarrier allocation to a mobile terminal in a...

2006-12-18

2011-11-08

Liu, Shuwang (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S259000

Reexamination Certificate

active

08054895

ABSTRACT:
The invention concerns a method for performing adaptive subcarrier allocation to a mobile terminal (T1-T4) for OFDM or FDM transmission in a multi cell network (CN), whereby transmit powers of base stations (BS1-BS8) are estimated, channel transfer functions are calculated based on measurements in the mobile terminal (T1-T4) of pilots transmitted from base stations (BS1-BS8), the transmit powers are weighted with the channel transfer functions, a signal power and an interference power received in the mobile terminal (T1-T4) are estimated based on said weighted transmit powers, a signal to interference ratio is estimated based on the estimated signal and interference power received in the mobile terminal (T1-T4), and the adaptive subcarrier allocation is based on the signal to interference ratio of the subcarriers experienced by the mobile terminal (T1-T4), a base station (BS1-BS8), a mobile terminal (T1-T4) and a multi cell network (CN) therefor.

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Patrick Svedman Multiuser Dicersity Orthogonal Frequency Division Multiple Access Systems Dec. 1, 2004, XP002383789 Stockholm, Sweden.
Wong et al., Multiuser OFDM with Adaptive Subcarrier, Bit, and Power Allocation, IEEE Journal on Selected Areas in Communications, vol. 17, No. 10, Oct. 1998, pp. 1747-1758.

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