Title :
Shaping the power spectrum of geometrically uniform TCM codes using wavelet packet modulation
Author :
Daneshgaran, Fred ; Mondin, Marina
Author_Institution :
Dept. of Electr. & Comput. Eng., California State Univ., Los Angeles, CA, USA
Abstract :
In this paper, we propose a technique for shaping the power spectrum of coded modulation that is an intermediate solution between the Tomlinson-Harashima and trellis precoding, and the OFDM options. In particular, we propose the use of several independent TCM codes to encode different subbands of the available transmission bandwidth (BW). The subbands are spanned by wavelet packets or in general generated using a filter bank. Simple conditions are stated that ensure that all the component TCM codes in all the subbands can be decoded simultaneously and in a single decoder
Keywords :
decoding; spectral analysis; trellis coded modulation; wavelet transforms; OFDM; Tomlinson-Harashima precoding; available transmission bandwidth; coded modulation; decoder; filter bank; geometrically uniform TCM codes; power spectrum; subbands; trellis precoding; wavelet packet modulation; wavelet packets; AWGN channels; Decision feedback equalizers; Decoding; Filter bank; Frequency; Matched filters; Maximum likelihood detection; Modulation coding; Radio transmitters; Wavelet packets;
Conference_Titel :
Military Communications Conference, 1996. MILCOM '96, Conference Proceedings, IEEE
Conference_Location :
McLean, VA
Print_ISBN :
0-7803-3682-8
DOI :
10.1109/MILCOM.1996.568627
