CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a 371 National Stage of International Application No. PCT/KR2018/008839 filed Aug. 3, 2018, which claims priority to Korean Patent Application No. 10-2017-0098363 filed Aug. 3, 2017, the disclosures of which are herein incorporated by reference in their entirety.

BACKGROUND

1. Field

The present disclosure relates generally to a wireless environment system. More particularly, the present disclosure relates to an apparatus and a method for processing a received signal in the wireless environment system.

2. Description of Related Art

To meet the demand for wireless data traffic having increased since deployment of 4thgeneration (4G) communication systems, efforts have been made to develop an improved 5thgeneration (5G) or pre-5G communication system. Therefore, the 5G or pre-5G communication system is also called a ‘Beyond 4G Network’ or a ‘Post Long Term Evolution (LTE) System’.

The 5G communication system is considered to be implemented in higher frequency (mmWave) bands, e.g., 60 GHz bands, so as to accomplish higher data rates. To decrease propagation loss of the radio waves and increase the transmission distance, the beamforming, massive multiple-input multiple-output (MIMO), Full Dimensional MIMO (FD-MIMO), array antenna, an analog beam forming, large scale antenna techniques are discussed in 5G communication systems.

In addition, in 5G communication systems, development for system network improvement is under way based on advanced small cells, cloud Radio Access Networks (RANs), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, moving network, cooperative communication, Coordinated Multi-Points (CoMP), reception-end interference cancellation and the like.

In the 5G system, Hybrid frequency shift keying and quadrature amplitude modulation (FQAM) and sliding window superposition coding (SWSC) as an advanced coding modulation (ACM), and filter bank multi carrier (FBMC), non-orthogonal multiple access (NOMA), and sparse code multiple access (SCMA) as an advanced access technology have been developed.

Processing for lowering a peak-to-average power ratio (PAPR) is applied to a signal transmitted in a wireless environment. Such processing may increase complexity of a receiver of a reception device. In this regard, a solution for reducing the complexity of the receiver of the reception device is demanded.

SUMMARY

To address the above-discussed deficiencies of the prior art, it is a primary aspect of the present disclosure to provide an apparatus and a method for processing a received signal in a wireless environment.

Another aspect of the present disclosure is to provide an apparatus and a method for reducing a peak-to-average power ratio (PAPR) in a wireless environment.

Yet another aspect of the present disclosure is to provide an apparatus and a method for reducing complexity of a receiver.

The technical problem to be achieved in the present disclosure is not limited to the technical problem mentioned above, and other technical problems not mentioned above are clearly understood by those skilled in the art from the following description.

According to one aspect of the present disclosure, a reception device in a wireless environment may include at least one receiver, and at least one processor operatively coupled with the at least one receiver and configured to receive a signal from a transmission device, to identify that the received signal is modulated based on at least one designated modulation scheme of modulation schemes, based on identifying, to generate second values by applying a first circular shift of a first direction to first values relating to first symbols of the signal, and to generate third values by applying a second circular shift of a second direction which is different from the first direction, to complex conjugate values of the first values, to generate second symbols of the signal based at least in part on the second values and the third values, and to obtain data about the signal based at least in part on the second symbols.

According to another aspect of the present disclosure, a method of a reception device in a wireless environment may include receiving a signal from a transmission device, identifying that the received signal is modulated based on at least one designated modulation scheme of modulation schemes, based on identifying, generating second values by applying a first circular shift of a first direction to first values relating to first symbols of the signal, and generating third values by applying a second circular shift of a second direction which is different from the first direction, to complex conjugate values of the first values, generating second symbols of the signal based at least in part on the second values and the third values, and obtaining data about the signal based at least in part on the second symbols.

A receiving device and method according to various embodiments of the present disclosure may reduce the complexity of the operation required for receiving a signal by applying at least one cyclic shift to values associated with symbols for a signal received from the transmitting device.

Effects which can be acquired by the disclosure are not limited to the above described effects, and other effects that have not been mentioned may be clearly understood by those skilled in the art from the following description.

