METHOD AND APPARATUS FOR DETERMINING POWER ALLOCATION TO EACH SUBCHANNEL IN UPLINK OFDMA SYSTEM FOR MULTI-USER AND MULTI-SUBCHANNEL, AND MOBILE TERMINAL HAVING THE APPARATUS

摘要

Multi-user is the user terminal is disclosed having a power control device and method, and the power control device for determining the power to allocate to each sub-channel of the user terminal in an uplink OFDMA system using a multi-channel unit. Power determination method according to the invention, the method comprising: measuring a channel gain of the noise power density, and each subchannel of the user terminal, receiving a power to be assigned to the channel gains, and each sub-channel in each sub-channel of the other user terminals and in consideration of the received channel gain, and power, and using the measured noise power density, and the channel gain to the water-filling method comprising the step of determining the power to allocate to each sub-channel of the user terminal . According to the present invention, a multi-user may maximize the total throughput of all user terminals by taking into account interference with other user terminals in an uplink OFDMA system using a multi-channel unit. ; Multi-user, multi-subchannel, OFDMA, power allocation