Variable-length coding based on Bent sequences for wireless advertising

Wireless media, which is commonly used for advertising purposes, should be constructed in a manner which reduces the required access time and the cost for the receiver. Two families of orthogonal codes are presented as a means to deliver information based on CDMA technology. The data stream that contains pages and links is coded with a unique set of Walsh-Hadamard (WH) functions, while the whole data stream of a particular base station is coded using the Bent sequence, another class of binary coding sequence. Numerical results are presented and they show that a system using Bent coding exhibits a significant improvement in performance in terms of the bit error rate and potential number of simultaneous users in comparison with other sequences