In a FSS-OFDMA, the OFDM symbol is spread, and the subcarriers are assigned for each
user in the frequency band. As the principal subcarrier allocation for each user, localized and …

In an orthogonal frequency division multiple access (OFDMA), the subcarrier assignment
with the multiuser diversity (MUDiv) gain has been proposed. However, in a MUDiv/OFDMA, …

For the transmission technique by a multiple-input multiple-output (MIMO), space division (SD)
multiplexing and spatial modulation (SM) have been proposed. However, since they have …

In cooperative systems for multi-antenna techniques, multiple-input multiple-output (MIMO) is
essential to enhance the system capacity. For the transmission technique of MIMO systems, …

To achieve more high speed and high quality systems of wireless communications, orthogonal
frequency division multiple access (OFDMA) has been proposed. Moreover, OFDMA …

Recently, multiple‐input multiple‐output (MIMO) is studied actively such as a key technology
for wireless communications. Space division (SD) multiplexing and spatial modulation (SM) …

In recent years, the indoor positioning solution market has been expanding, and there is a
growing demand for indoor positioning technologies. Consequently, various techniques for …

Cooperative communications obtain the transmission and channel diversity gains by using
the relay node. However, since cooperative communications transmit the redundancy signal …

In multiple-input multiple-output (MIMO) systems, space division multiplexing and spatial
modulation (SD-SM) transmissions have been proposed. And then, in the SD-SM-MIMO, the bit …

Internet of things (IoT) is a part of the concept for 5th generation (5G), and cooperative
communications which utilize the relay node between the source and destination nodes are …