Mimo reception device and mimo reception method
AssigneePanasonic Corporation
InventorsSeigo Nakao, Masayuki Hoshino
Life of this patent
Estimating the term…
Abstract
Provided are a MIMO transmission device and a MIMO transmission method which can improve reception quality of a response signal. A terminal (100) as the MIMO transmission device maps a first and a second element of the ACK/NACK signal vector formed from ACK/NACK signals onto a first and a second stream, respectively, and transmits the elements contained in a 2SC-FDMA symbol in a single slot. In the terminal (100), a response signal vector formation unit (140) forms [a·Sack, 0] as the ACK/NACK signal vector in a first SC-FDMA symbol and [0, a·Sack] as an ACK/NACK signal vector in a second SC-FDMA symbol. A precoding unit (165) uses a unitary matrix to precode the ACK/NACK signal vector formed in the response signal vector formation unit (140).
Claims30
An integrated circuit for controlling a process comprising:
- forming a plurality of ACK/NACK signal vectors based on a signal indicative of ACK/NACK, the plurality of ACK/NACK signal vectors including a first ACK/NACK signal vector and a second ACK/NACK signal vector different from the first ACK/NACK signal vector;
- generating a first stream using a first sequence, the first ACK/NACK signal vector and the second ACK/NACK signal vector, and to generate a second stream using a second sequence different from the first sequence, the first ACK/NACK signal vector and the second ACK/NACK signal vector;
- and
- transmitting the first stream and the second stream that are spatial-multiplexed.
An integrated circuit for controlling a process comprising:
- receiving a first stream and a second stream that are transmitted from a transmission apparatus and that are spatial-multiplexed, wherein, the first stream is generated using a first sequence, a first ACK/NACK signal vector and a second ACK/NACK signal vector different from the first ACK/NACK signal vector, and the second stream is generated using a second sequence different from the first sequence, the first ACK/NACK signal vector and the second ACK/NACK signal vector, each of the first ACK/NACK signal vector and the second ACK/NACK signal vector being formed based on a signal indicative of ACK/NACK;
- and
- detecting said signal indicative of ACK/NACK based on the first ACK/NACK signal vector and the second ACK/NACK signal vector.
Dependencies are inferred from the claim text.