INTEGRATED CIRCUIT

摘要

Wireless communication wherein channel estimation accuracy is improved while keeping the position of each bit in a frame, even when a modulation system having a large modulation multiple value is used for a data symbol. An encoding operation encodes and outputs transmitting data (bit string) and a bit converting operation converts at least one bit of a plurality of bits constituting a data symbol to be used for channel estimation, among the encoded bit strings, into ‘1’ or ‘0’. A modulating operation modulates the bit string inputted from the bit converting operation by using a single modulation mapper and a plurality of data symbols are generated.

主权项

1. An integrated circuit comprising:
transmitting circuitry, which, in operation, controls transmission of control information indicating a number of bits; and receiving circuitry, which, in operation, controls reception of a bit sequence, in which each of the number of bits indicated by the control information of a plurality of bits is forcibly set to a 1 and which is modulated by mapping the plurality of bits on a single modulation mapper, wherein the plurality of bits forms a modulation symbol in the bit sequence, and the single modulation mapper has first signal points, wherein each of the number of bits is forcibly set to the 1 in a way that the plurality of bits are mapped to one of second signal points, which are a part of the first signal points, a distance between the second signal points being equivalent to a largest of distances existing among the first signal points in an I-Q plane of the single modulation mapper.