- Research Article
- Open access
- Published:
Adaptive Zero-Padding OFDM over Frequency-Selective Multipath Channels
EURASIP Journal on Advances in Signal Processing volume 2004, Article number: 598709 (2004)
Abstract
We present a novel bandwidth (BW) efficient orthogonal frequency division multiplexing (OFDM) scheme with adaptive zero-padding (AZP-OFDM) for wireless transmission. Redundancy issues in OFDM based on cyclic prefix (CP), zero-padding (ZP), as well as no guard interval (NGI) systems are analyzed. A novel system design criterion based on the channel matrix condition is studied and applied to the design of an AZP-OFDM system. Simulation results have shown that the proposed AZP-OFDM offers performance similar to that of CP-OFDM, complexity similar to that of ZP-OFDM, with BW efficiency higher than that of both CP- and ZP-OFDM in channels with small to moderate delay spread. In channels with large delay spread, AZP scheme adaptively maintains high performance at the expense of BW efficiency. Essentially, AZP-OFDM offers a more flexible tradeoff between symbol recovery, BW efficiency, and complexity.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Wang, N., Blostein, S.D. Adaptive Zero-Padding OFDM over Frequency-Selective Multipath Channels. EURASIP J. Adv. Signal Process. 2004, 598709 (2004). https://doi.org/10.1155/S1110865704311157
Received:
Revised:
Published:
DOI: https://doi.org/10.1155/S1110865704311157