Multiuser carrier frequency offsets estimation for OFDMA uplink with generalized carrier assignment scheme

• Published in: IEEE transactions on wireless communications Vol. 8; no. 7; pp. 3347 - 3353
• Main Authors: Wang, Huiming, Yin, Qinye
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.07.2009; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Antennas; Applied sciences; Array signal processing; Bandwidth; Base stations; Blinds; Carrier frequencies; carrier-frequency offset (CFO); Carriers; Computer simulation; Content addressable storage; Detection, estimation, filtering, equalization, prediction; Downlink; Dynamical systems; Dynamics; Exact sciences and technology; Frequency estimation; Frequency synchronization; generalized carrier assignment scheme; Information, signal and communications theory; Monte Carlo methods; Multiple access interference; Multiplexing; multiuser system; Narrowband; Orthogonal frequency-division multiple-access (OFDMA); Radiocommunications; Signal and communications theory; Signal, noise; Studies; Subcarriers; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Transmission and modulation (techniques and equipments); Wireless communication; Performance evaluation; Direction-of-arrival estimation; Parameter estimation; Base station; Signal estimation; carrier-frequency offset (CFO); Frequency division multiple access; Downlink; Frequency conversion; Subcarrier; Beam forming; Dynamic allocation; multiuser system; Linear antenna arrays; Uplink; Availability; generalized carrier assignment scheme; Multiple access; Synchronization; Algorithm; Orthogonal frequency-division multiple-access (OFDMA); Carrier frequency; Narrow band signal; Channel allocation; Orthogonal frequency division multiplexing; Numerical simulation; Frequency offset; Resource management

The frequency synchronization issue of multiuser in the uplink of an orthogonal frequency-division multiple-access (OFDMA) system is investigated in this letter. We develop a subspace based blind carrier frequency offsets (CFOs) estimation algorithm for the base station (BS) equipped with uniform li...