Study and Survey about Mixed Radix FFT Processor in MIMO OFDM


  • Kirubanada Sarathy N



The design of a highly configurable continuous flow mixed-radix (CFMR) Fast Fourier Transform (FFT) processor is presented in Multi-Input Multi-Output (MIMO) Orthogonal frequency division multiplexing (OFDM). Multi-Input Multi-Output (MIMO) system has drawn much attention in 4G wireless technologies. Orthogonal frequency division multiplexing (OFDM) is a popular method for high data rate wireless transmission. OFDM may be combined with antenna arrays at the transmitter and receiver to increase the diversity gain and enhance the system capacity on time variant and frequency selective channels, resulting in Multi-Input Multi-Output (MIMO) configuration. This paper represent as Mixed radix FFT in MIMO-OFDM system design including channel modeling, space time block code techniques, channel estimation and signal processing algorithms used for performing time and frequency synchronization in MIMO-OFDM system.


Download data is not yet available.

Author Biography

Kirubanada Sarathy N

Research Scholar, St.Peters University, Chennai.


[1] A. Paulraj, R. Nabar, D. Gore: Introduction to Space-Time Wireless Communications, Published May 2003, ISBN: 0521826152.

[2] V.D.Nguyen, M.Pätzhold, ―Frequency domain interference cancellation for MIMO-OFDM systems‖ Proc. 9th International OFDM-Workshop,Dresden, Germany, 15. – 16. Sept. 2004, p. 114–117.

[3] P. Uthansaku M.E. Bialkows ―Multipath signal effect on the capacity of MIMO, MIMO-OFDM and spread MIMO-OFDM‖ Microwaves, Radar and Wireless Communications, 2004. MIKON-2004. 15th International Conference on , Volume: 3 , 17-19 May 2004 Pages:989 - 992

[4] Y-L. Lee, Y-H. You, W-G. Jeon, J-H. Paik, H-K. Song, ― Peak-to-average power ratio in MIMO-OFDM systems using selective mapping‖ IEE Communications letters, Vol. 7, No. 12, December 2003

[5] A.J. Paulraj, D.A. Gore, R.U. Nabar, H. Bölcskei, ―An overview of MIMO communications - a key to gigabit wireless‖ Proceedings of the IEEE ,Volume: 92 , Issue: 2 , Feb. 2004 Pages:198 – 218

[6] Mujtaba et al., TGn Sync Proposal Tech.Specification for IEEE 802.11 Task Group 2005, IEEE 802.11-04/0889r3.

[7] S. Magar, S. Shen, G. Luikuo, M. Fleming, and R. Aguilar, ―An application specific DSP chip set for 100-MHz data rates,‖in Proc. Int. Conf. Acoustics, Speech, Signal Process., Apr. 1988, vol. 4, pp. 1989–1992.

[8] H. Shousheng and M. Torkelson, ―Designing pipeline FFT processor for OFDM (de)modulation,‖ in Proc. URSI Int. Symp. on Signals, Syst, Electron., Oct. 1998, vol. 29, pp. 257–262.

[9] J. O’Brien, J. Mather, and B. Holland, ―A 200 MIPS single-chip 1 k FFT processor,‖ in Proc. IEEE Int. Solid-State Circuits Conf., 1989, vol. 36, pp. 166–167,, 327.

[10] B. M. Bass, ―A low-power, high-performance, 1024-point FFT processor,‖ IEEE J. Solid-State Circuits, vol. 34, no. 3, pp. 380–387, Mar. 1999.

[11] W.-C. Yeh and C.-W. Jen, ―High-speed and low-power split-radix FFT,‖ IEEE Trans. Acoust.,Speech, Signal Process., vol. 51, no. 3, pp. 864–874, Mar. 2003.