Title :
A Fully Integrated LDR IR-UWB CMOS Transceiver Based on "1.5-bit" Direct Sampling
Author :
Pezzin, M. ; Lachartre, D.
Author_Institution :
CEA-Atomic Energy Commission, Grenoble
Abstract :
In this paper, we present a low-complexity low data rate (LDR) ultra wideband (UWB) transceiver prototype CMOS chip suitable for a differential binary phase shift keying (DBPSK) modulation applied data transmission with 500 MHz-bandwidth signals. This solution, which is mainly based on "1.5-bit" direct sub-sampling at 1 Gsps and differential digital correlations, enjoys good immunity to clock drift and interferers. It is also likely to offer an interesting trade-off between fine performance in dense multipath environments, low implementation complexity, and hence low power consumption. At first, the 1.5 bits concept is discussed. Then, the implementation choices for some critical blocks of the RX data path are discussed to justify the adopted low-complexity approach. Finally, some preliminary implementation results are provided.
Keywords :
CMOS integrated circuits; data communication; differential phase shift keying; sampling methods; transceivers; CMOS chip; CMOS transceiver; DBPSK modulation; LDR IR-UWB transceiver; clock drift immunity; dense multipath environments; differential binary phase shift keying; differential digital correlations; direct sampling; integrated transceiver; interferer immunity; low data rate transceiver; ultrawideband transceiver; Binary phase shift keying; Clocks; Energy consumption; Quantization; RF signals; Radio frequency; Sampling methods; Silicon; Transceivers; Ultra wideband technology; 1-bit Quantization; Differential Binary Phase Shift Keying; Direct Sampling; Low Complexity; Low Data Rate; Low Power Consumption; Ultra Wideband;
Conference_Titel :
Ultra-Wideband, 2007. ICUWB 2007. IEEE International Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-0521-3
Electronic_ISBN :
978-1-4244-0521-3
DOI :
10.1109/ICUWB.2007.4381023
