Efficient Detection of Zero-padded Ofdm Signals with Large Blocks

An OFDM interpretation of zero padded block transmissions

Orthogonal frequency division multiplex (OFDM) systems are particularly straightforward to understand in the frequency domain. The purpose of this paper is to draw attention to the fact that zero padded block transmissions also have a straightforward frequency domain interpretation. The advantages of this interpretation are illustrated by three additional results which further the understanding...

Zero padded suffix aided subspace-based narrowband interference detected adaptive channel estimation for MB-OFDM UWB systems

The ECMA-368 standard specifies multiband orthogonal frequency division multiplexing (MB-OFDM) as the definitive technology for high rate ultra-wideband (UWB) communications. Like other wireless systems, the performance of a correct data signals detection and decoding in MB-OFDM UWB is reduced by narrowband interference (NBI). A more specific problem of severity arises when interferences are pr...

Turbo Demodulation of Zero-Padded OFDM Transmissions

Optimality of single-carrier zero-padded block transmissions

We consider the class of linear precoded (LP) orthogonal frequency division multiplexing (OFDM) systems. We first show that single-carrier zero-padded transmissions, termed ZP-only, can be viewed as a special case of LP-OFDM. By resorting to the pair-wise error probability analysis, we establish the optimality of ZP-only among the LP-OFDM class in terms of its performance in random frequency-se...

Development of Zero-Padded Conjugate Cancellation Transmission with Adaptive Receiver for ICI Cancellation

OFDM (Orthogonal Frequency Division Multiplexing) system is the high bandwidth efficient technique mainly used for high data transmission over the multipath fading environment. The major challenges faced by OFDM/OFDMA systems are sensitivity to frequency selective fading and ICI due to Doppler shift and CFO when subcarrier spacing becomes smaller. So we implement the zero padded conjugate techn...