Integrated circuit for controlling radio transmission and reception

Patent metadata

Field	Value
Publication number	US-9008115-B2
Application number	US-201414228692-A
Country	US
Kind code	B2
Filing date	Mar 28, 2014
Priority date	Sep 13, 2002
Publication date	Apr 14, 2015
Grant date	Apr 14, 2015

Abstract

Data streams stored in buffers are modulated by modulation sections. Multipliers multiply the signals output from the modulation sections by weights output from a weight control section. The signals output from the multipliers are added up by addition sections, subjected to radio transmission processing by transmission radio sections and sent through antennas. A buffer control section controls the buffers based on a retransmission count output from a retransmission count detection section. The weight control section outputs weights different from weights at the time of previous transmission to the multipliers every time data is retransmitted. This allows a diversity gain at the time of data retransmission to be increased even if a time variation of the propagation path environment for radio signals is slow.

First claim

The invention claimed is:

1. An integrated circuit for controlling a process comprising:
multiplying a plurality of streams by a plurality of weights;
transmitting the plurality of streams multiplied with the weights using a plurality of antennas;
receiving feedback information including acknowledgment/negative acknowledgment (ACK/NACK) information and channel quality information (CQI) which are transmitted from a reception apparatus; and
selecting a plurality of weights for…

Assignees

• Panasonic Ip Corp America

Inventors

• Miyoshi Kenichi

Classifications

• H04B7/04

  Electricity · mapped topic

• H04B7/0842

  Electricity · mapped topic

• H04B7/0697

  Electricity · mapped topic

• H04L1/1893

  Electricity · mapped topic

• H04L1/0015

  Electricity · mapped topic