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- Vijay Ahirwar, SOUNDAR RAJAN
- Proceedings. International Symposium on…
- 2005

It is known that in an OFDM system using Hadamard transform or phase alteration before the IDFT operation can reduce the peak-to-average power ratio (PAPR). Both these techniques can be viewed as constellation preceding for PAPR reduction. In general, using non-diagonal transforms, like Hadamard transform, increases the ML decoding complexity. In this paper… (More)

- Vijay Ahirwar, B. Sundar Rajan
- GLOBECOM
- 2005

This paper addresses the problem of space-frequency code design for broadband multian t enna OFDM systems. We show that space-time codes achieving full diversity in quasi-static flat fading environment can be used to construct space-frequency codes that achieve the max imum diversity available in frequency selective MIMO fading channels. Thus, the abundant… (More)

- Vijay Ahirwar
- 2005

It is known that in an OFDM system using Hadamard transform or phase alteration before the IDFT operation can reduce the Peak-to-Average Power Ratio (PAPR). Both these techniques can be viewed as constellation precoding for PAPR reduction. In general, using non-diagonal transforms, like Hadamard transform, increases the ML decoding complexity. In this paper… (More)

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