A method for wafer alignment includes forming a first alignment circuit within a first semiconductor wafer; the first alignment circuit is configured to emit an optical signal. A set of search query parameters specifying a plurality of sequence sets is received. The at least one processor may process a group of packets based on the data. Each fiber is curved differently from the others in order that the fiber paths each provide a different delay. The wireless device may then process the reference signal from the OFDM symbols that are determined to be the first set of OFDM symbols.