Patent ID: 7266156

Claim:
An apparatus for producing a multi-carrier signal at a reduced peak to average power ratio, comprising: a control system for determining a N number of carriers in said multi-carrier signal, N being greater than one, determining chip time of a spreading sequence used for spreading said number of carriers and determining one or more delay times for N- 1 carriers based on said determined number of carriers and said determined chip time, wherein one delay time is approximately equal to the chip time divided by N, and wherein said chip time is approximately equal to the inverse of the spreading sequence frequency; at least one first up-converter for up-converting each of the N- 1 carriers to a frequency, wherein each of the N- 1 carriers are up-converted to a different frequency; means for delaying N- 1 carriers by said determined one or more delay times; a combiner for combining the N- 1 delayed carriers with a single non-delayed carrier to produce a reduced peak to average power ratio multi-carrier signal; and a second up-converter for up-converting the combined carriers to a single carrier frequency.