Title :
Practically realizable digital transmission significantly below the Nyquist bandwidth
Author :
Wang, Cheng-Kun ; Lee, Lin-shan
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taiwan
Abstract :
A practically realizable digital signaling scheme is proposed that requires a bandwidth significantly less than the Nyquist limit and at the same time achieves the same asymptotic performance as memoryless pulse-amplitude modulation (PAM). A three-step iterative procedure for constructing such schemes is presented, and examples that occupy down to about 60% of the Nyquist bandwidth are demonstrated using this simple procedure. A practical receiver structure using an adaptive breath-first trellis search algorithm is also discussed
Keywords :
digital signals; filtering and prediction theory; information theory; receivers; Nyquist bandwidth; adaptive breath-first trellis search algorithm; asymptotic performance; digital signaling scheme; digital transmission; filters; reduced bandwidth; three-step iterative procedure; Amplitude modulation; Bandwidth; Channel capacity; Degradation; Intersymbol interference; Iterative algorithms; Matched filters; Partial response signaling; Pulse modulation; Quadrature amplitude modulation;
Conference_Titel :
Global Telecommunications Conference, 1991. GLOBECOM '91. 'Countdown to the New Millennium. Featuring a Mini-Theme on: Personal Communications Services
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-87942-697-7
DOI :
10.1109/GLOCOM.1991.188561
