Power and bandwidth efficient communication schemes are of majornconcerns in wireless communication systems. One type of efficientnpseudonoise code is proposed in this paper that provides combinednpower-bandwidth efficiency. A novel algorithm for verifying the powernand bandwidth efficient properties of a pseudonoise code is proposednwith systematic analysis of code parameters. Applications of the derivedncodes have been implemented on an 802.11 DS-SS system, which performsn36% bandwidth reduction and 14% power consumption reduction. Several newnpseudonoise codes with different code lengths are also proposed
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