Title :
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
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;
Conference_Titel :
Advances in Computing, Communications and Informatics (ICACCI), 2013 International Conference on
Conference_Location :
Mysore
Print_ISBN :
978-1-4799-2432-5
DOI :
10.1109/ICACCI.2013.6637394
