Multiple transmit and receive antennas can be used to form multiple-input multiple-output (MIMO) channels to increase the capacity and data rate.In this paper we present a novel technique which is based on the equalization value where we taken several dynamic ranges from the sin and cosine values and according to those values we first take the lower limit basis on the orthogonal (peak values) and then taken the higher value basis on the orthogonal (peak values). Then apply the rate adaptive method to compare those values according to those changes. We consider those values because the distortion rate is decreases in case of decreasing values in some cases and in some cases increasing values are also important in some cases, so we analyse those cases and then finalize the result based on those parameters. In these technique the phase sequence multiplication before perform FFT operation by using PN sequence generator and second phase sequence multiplication are the invert version of PN sequence generator.

1. J. Tellado, \Multicarrier modulation with low PAR: applications to DSL and wireless," Phd Stanford dissertation, vol. 1, no. 1, pp. 65{92, April 2000.
2. A. E. Jones, T. A. Wilkinson, and S. Barton, “Block coding scheme for reduction of peak to mean envelope power ratio of multicarrier transmission schemes,” IEE Electronics Letters, vol. 30, pp. 2098–2099, Dec. 1994.
3. Luqing Wang and Chmtha Tellambura" An Overview of Peak-to-Average Power Ratio Reduction Techniques for OFDM Systems" IEEE Trans vol. 39, no. 3, pp -740-754 June 2006.
4. B. S. Krongold and D. L. Jones, “A study of active constellation extension for PAR reduction in OFDM,” Proc. International OFDM Workshop, Germany, pp. 107-111, Sept. 2002.
5. Seok-Joong Heo, Hyung-Suk Noh “A Modified SLM Scheme With Low Complexity for PAPR Reduction of OFDM Systems" IEEE Trans. Communications, vol. 53, no. 4, pp. 365-369, December 2007.
6. C.Y.Wong, R.S.Cheng, K.B.Letaief, and R.D.Murch,“Multiuser OFDM with adaptive sub-carrier, bit, and power allocation,” IEEE J.Select, Areas Commun., vol. 17, pp.1747-1758, Oct 1999.
7. W. Rhee and J.M. Cioffi,” Increase in capacity of multiuser OFDM system using dynamic sub-channel allocation,” in Proc. IEEE Vehicular Technology Conf. (VTC’2000),2000, PP. 1085-1089.
8. Zukang Shen, Jeffrey G. Andrews and Brian L. vans,“Optimal Power Allocation in Multiuser OFDM Systems”,Proc. IEEE Global Commun. Conf., San Francisco, CA,Dec. 2003, pp. 337- 341.
9. Ian C. Wong, Zukang Shen, Brian L. Evans and Jeffrey G. Andrews, “A Low Complexity Algorithm for Proportional Resource Allocation in OFDMA Systems”Proc. IEEE Int.Workshop on Signal Processing Systems,pp. 1-6, Oct.2004.

OFDM MIMO Orthogonal RA