Carrier frequency offset with I/Q imbalance analysis of fifth generation WiFi

Author

Lalitha, H. ; Sharma, Ritu ; Kumar, Narendra

Author_Institution

Dept. of Electron. & Commun, Oxford Coll. of Eng., Bangalore, India

fYear

2013

Firstpage

1458

Lastpage

1462

Abstract

The performance of the Orthogonal Frequency Division Multiplexing (OFDM) based systems degrades especially being sensitive to carrier frequency offset (CFO) and inphase and quadrature (I/Q) imbalance which destroys orthogonality between subcarriers. The IEEE 802.11ac (fifth generation) wireless local area network (WLAN) standard uses OFDM equally spaced subcarriers to transmit data, and the number of subcarriers signal depend on the bandwidth. In this paper, we investigate the system behaviour considering CFO and I/Q imbalance impairments. Our studies focus on two important non data aided algorithms. The results of analysis are presented for different subcarriers in combination with modulation and throughput.

Keywords

OFDM modulation; wireless LAN; I/Q imbalance analysis; I/Q imbalance impairments; IEEE 802.11ac; OFDM based systems; WLAN standard; bandwidth; carrier frequency offset; fifth generation WiFi; modulation; nondata aided algorithms; orthogonal frequency division multiplexing; orthogonality; spaced subcarriers signal; wireless local area network; Bandwidth; Estimation; Frequency conversion; Mathematical model; OFDM; Standards; Vectors; 802.11ac; I/Q imbalancing; OFDM; carrier offset;

fLanguage

English

Publisher

ieee

Conference_Titel

Advances in Computing, Communications and Informatics (ICACCI), 2013 International Conference on

Conference_Location

Mysore

Print_ISBN

978-1-4799-2432-5

Type

conf

DOI

10.1109/ICACCI.2013.6637394

Filename

6637394