Apparatus and method for transmitting data with conditional zero padding

摘要

An apparatus and method for transmitting data with conditional zero padding is provided. In accordance with an embodiment of the disclosure, a transmitter transmits data to a receiver by transmitting symbols such that each symbol is preceded by a cyclic prefix of a fixed length and the symbol conditionally includes enough zero padding to avoid ISI (Inter-Symbol Interference) between consecutive symbols. In some implementations, if the fixed length for cyclic prefixes is long enough to avoid ISI between consecutive symbols, then the symbols may omit zero padding. Otherwise, the symbols may include enough zero padding to avoid ISI between consecutive symbols. The zero padding may be zero tail or zero head.

主权项

1. A transmitter comprising:
a wireless access radio for transmitting data over a channel; a computer readable medium for storing instructions; and a processor operatively connected to the wireless access radio and to the computer readable medium, that upon execution of the stored instructions causes the transmitter to: determine that a cyclic prefix length associated with symbols in a transmission is insufficiently long to prevent Inter-Symbol Interference, ISI, between adjacent symbols; and responsive to the determination, inserting zero padding into one of the symbols to mitigate the ISI, wherein an amount of zero padding inserted is no greater than an amount of zero padding required to avoid ISI between adjacent symbols.