Abstract:

The digital pulse interval modulation (DPIM) is indtroduced into energy detection based ultra-wideband (UWB) communication systems and the performance of DPIM is studied. The modulation scheme suitable for impulse  radio  UWB channel is presented. DPIM transmission capacity based on the definition is analyzed and is compared with on off keying (OOK) and pulse position modulation (PPM). Expressions of slot  error  probability and packet error probability are derived for DPIM. Numerical results of different modulations in one of IEEE 802.15.3a models show that, for certain modulation orders (e.g., 4-DPIM vs 2-PPM), DPIM is superior to PPM in both error performance and transmission capacity. Furthermore, compared with OOK, DPIM, with a high modulation order, achieves a better error performance at the cost of certain transmission capacity.