Title :
Capacity of ultra-wideband transmission with pulse position amplitude modulation and RAKE reception
Author :
Li, Wei ; Gulliver, T. Aaron ; Zhang, Hao
Author_Institution :
Dept. of Electr. & Comput. Eng., Victoria Univ., BC
Abstract :
Recently, pulse position amplitude modulation (PPAM) has been proposed for ultra-wideband (UWB) communication systems. PPAM combines pulse position modulation (PPM) and pulse amplitude modulation (PAM) to provide better performance and higher system capacity with low computational complexity. A RAKE receiver can make use of the rich multipath of UWB systems to improve system performance and capacity. In this paper we present the capacity of a RAKE receiver employing maximal ratio combining (MRC) in a time hopping (TH) UWB system with PPAM modulation. Single user capacity and a capacity limit based on FCC Part 15 rules are derived for a realistic multipath fading environment. Numerical results are given to illustrate the system capacity
Keywords :
channel capacity; computational complexity; fading channels; multipath channels; pulse amplitude modulation; pulse position modulation; radio receivers; ultra wideband communication; PPAM; RAKE receiver; RAKE reception; UWB; computational complexity; maximal ratio combining; multipath fading environment; pulse position amplitude modulation; single user capacity; time hopping system; ultra-wideband transmission; Amplitude modulation; Computational complexity; Diversity reception; FCC; Fading; Multipath channels; Pulse modulation; System performance; Ultra wideband technology; Wireless communication;
Conference_Titel :
Electrical and Computer Engineering, 2005. Canadian Conference on
Conference_Location :
Saskatoon, Sask.
Print_ISBN :
0-7803-8885-2
DOI :
10.1109/CCECE.2005.1557181
