Title :
Turbo-coded multi-alphabet binary CPM for concatenated continuous phase modulation
Author :
Ning, Jun ; Fu, Minyue ; Wade, Graham
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Newcastle Univ., NSW, Australia
fDate :
28 Nov.-2 Dec. 2005
Abstract :
Constant envelope and high spectral efficiency are among the key properties which make continuous phase modulation (CPM) a preferred choice for many applications. Numerous methods are available for designing concatenated CPM systems to achieve additional coding gains. In this paper, we propose a new serial concatenated CPM scheme. Our design uses a multi-alphabet binary CPM as an inner code, a modified turbo code as an outer code, and specially designed interleavers. The extrinsic information transfer (EXIT) chart technique has been employed to assist the outer code design. Using soft decision decoding, we show that our design gives noticeable improvements compared with previous concatenated CPM schemes over additive white Gaussian noise (AWGN) channel.
Keywords :
concatenated codes; continuous phase modulation; turbo codes; AWGN channel; additive white Gaussian noise channel; coding gains; concatenated continuous phase modulation; constant envelope; extrinsic information transfer chart technique; high spectral efficiency; inner code; outer code; soft decision decoding; turbo-coded multialphabet binary CPM; AWGN; Australia; Bit error rate; Concatenated codes; Continuous phase modulation; Convolutional codes; Frequency; Iterative decoding; Modulation coding; Turbo codes;
Conference_Titel :
Global Telecommunications Conference, 2005. GLOBECOM '05. IEEE
Print_ISBN :
0-7803-9414-3
DOI :
10.1109/GLOCOM.2005.1577885