Transmitting spread signal in communication system

摘要

The present invention provides for transmitting a spread signal in a mobile communication system. The present invention includes spreading a signal using a plurality of spreading codes, wherein the plurality of spreading codes have a spreading factor, multiplexing the spread signal by code division multiplexing, transmitting the multiplexed signal via a plurality of neighboring frequency resources of one OFDM symbol of a first antenna set, and transmitting the same multiplexed signal via a plurality of neighboring frequency resources of one OFDM symbol of a second antenna set.

主权项

1. A method for transmitting Acknowledgement/Negative Acknowledgement (ACK/NACK) information in a mobile communication system, the method performed by a base station and comprising:
generating first spread ACK/NACK information using an orthogonal sequence with a spreading factor of 4; generating second spread ACK/NACK information using the orthogonal sequence; coding the first spread ACK/NACK information as shown in Table 1; and coding the second spread ACK/NACK information as shown in Table 2:TABLE 1First set of four available neighboringsubcarriers in an OFDM symbolantenna Aa1a2a3a4antenna B−a2* a1*−a4* a3*antenna C0000antenna D0000TABLE 2Second set of four available neighboringsubcarriers in an OFDM symbolantenna A0000antenna B0000antenna Ca1a2a3a4antenna D−a2* a1*−a4* a3* wherein a1 to a4 are respectively associated with first to fourth elements of the first spread ACK/NACK information, and b1 to b4 are respectively associated with first to fourth elements of the second spread ACK/NACK information, wherein the “*” symbol represents a conjugate operation, wherein the first spread ACK/NACK information and the second spread ACK/NACK information carry identical ACK/NACK information, and wherein the first set of four available neighboring subcarriers are separated from the second set of four available neighboring subcarriers by a plurality of subcarriers in a frequency domain.