Block-spreading codes for impulse radio multiple access through ISI channels
نویسندگان
چکیده
Transmitting digital information using ultra-short pulses, Impulse Radio (IR) has received increasing interest for Multiple Access (MA). Analog IRMA utilizes pulse-position modulation (PPM) and random time-hopping codes to mitigate inter-symbol interference (ISI) and suppress multiuser interference (MUI) statistically. We develop an alldigital IRMA scheme that relies on block-spreading and judiciously designed transceiver pairs to eliminate MUI deterministically, and regardless of ISI multipath effects.
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Multistage block-spreading for impulse radio multiple access through ISI channels
Transmitting digital information using ultra-short pulses, impulse radio (IR) has received increasing interest for multiple access (MA). When IRMA systems have to operate in dense multipath environments, the multiple user interference (MUI) and intersymbol interference (ISI) induced, adversely affect system capacity and performance. Analog IRMA utilizes pulse position modulation (PPM) and rando...
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