@article{oai:nitech.repo.nii.ac.jp:00005213,
 author = {Okamoto, Eiji and Iwanami, Yasunori and Ikegami, Tetsushi},
 issue = {10},
 journal = {IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences},
 month = {Oct},
 note = {Wavelet packet modulation (WPM) using the discrete wavelet transform is a multiplexing transmission method in which data is assigned to wavelet subbands having different time and frequency resolutions. The WPM keeps data transmission throughput even in tone and impulse interference environments that cannot be achieved with conventional multiplexing methods such as TDM (Time division multiplexing) or OFDM (Orthogonal frequency division multiplexing). In this paper, we propose an effective multicarrier transmission method of WPM for wireless mobile communications. First, the transmission characteristics of WPM in fading environments are minutely investigated. Then, taking the advantage of the WPM and the OFDM that has an equalizing technique in multipath fading environments, we propose a multimode transmission method using them. The adaptive transmission in those fading and interference environments is achieved by using the multimode transmission. Their transmission performances are evaluated by computer simulations., application/pdf},
 pages = {2684--2691},
 title = {Application of Wavelet Packet Modulation to Mobile Communication},
 volume = {E87-A},
 year = {2004}
}