Shimpei To

TL;DR: In this paper, an adaptive modulation technology is applied even to MIMO spatial multiplexing transmission using a LR technology, and hence a wireless communication system and so forth that can contribute to improvement in frequency utilization efficiency can be provided.

TL;DR: In this paper, a radio communication system changes a method of allocating the plurality of frequency signals onto a plurality of subcarriers based on transmission power information, and the radio system converts a time domain signal into a plurality-of-frequency signals to be allocated onto a subcarrier to be transmitted.

TL;DR: In this paper, a base station device comprises a receiving section (132) for receiving information from a mobile station device, a transmission power determining section(125) for determining the transmission power of when a wireless signal is transmitted to the mobile station devices, an acquiring section (120) for acquiring information about the communication environment of the time or frequency channels from the received information, a scheduling section(120), and allocating the transmission data and transmission power to be transmitted to a mobile Station device to the communication slot of the transmission channel.

TL;DR: In this article, the allocation of transmission power is carried out adaptively without affecting adjacent cells, including a reception part that receives information from a mobile station apparatus, a transmission power determination part that determines transmission power when transmitting a wireless signal to a mobile BS, an acquisition part that acquires information about communication environment in each time channel or each frequency channel from the received information, a scheduling part that identified a time channel and frequency channel the relationship of which between transmission power and communication environment satisfies the condition for allocation and allocates transmission data and transmission power for transmission to a MBS to

TL;DR: In this article, a communication device comprising a transmission unit and a reception unit is configured to transmit, to a first communication device, first information indicating a first set of subcarriers comprising of a plurality of sub-carriers, and to a second communication devices, second information indicating that a second set of subsets can overlap with at least a portion of the first subsets in a time frame.