Title :
A pilot symbol assisted channel estimation scheme for UWB IR systems with diversity reception
Author :
Tan, S.S. ; Nallanathan, A. ; Kannan, B.
Author_Institution :
Nat. Univ. of Singapore, Singapore
fDate :
30 Aug.-2 Sept. 2004
Abstract :
Impulse radio (IR) is an ultra-wideband (UWB) time-hopping spread spectrum technique in which sub-nanosecond pulses are modulated to convey information by shifting the position of the pulses in the time axis. We investigate channel estimation for an IR UWB system with an antenna array receiver in multipath environments with multiuser interference. The estimation method is pilot symbol assisted and it is based on the maximum likelihood criterion.
Keywords :
antenna arrays; channel estimation; diversity reception; maximum likelihood estimation; multipath channels; pulse position modulation; radio receivers; radiofrequency interference; receiving antennas; spread spectrum communication; ultra wideband communication; PPM; UWB IR systems; antenna array receiver; diversity reception; impulse radio; maximum likelihood criterion; multipath environments; multiuser interference; pilot symbol assisted channel estimation; pulse position modulation; sub-nanosecond pulses; time-hopping technique; ultra-wideband time-hopping spread spectrum technique; Antenna arrays; Channel estimation; Diversity reception; Interference; Pulse modulation; Receivers; Receiving antennas; Spread spectrum communication; Ultra wideband antennas; Ultra wideband technology;
Conference_Titel :
Spread Spectrum Techniques and Applications, 2004 IEEE Eighth International Symposium on
Print_ISBN :
0-7803-8408-3
DOI :
10.1109/ISSSTA.2004.1371747
