This paper aims to construct optimal Z-complementary code set (ZCCS) with non-power-of-two (NPT) lengths enable interference-free multicarrier code-division multiple access (MC-CDMA) systems. The existing ZCCSs NPT lengths, which are constructed from generalized Boolean functions (GBFs), sub-optimal only respect the size upper bound. For first time in literature, we advocate use of pseudo-Boole...

We propose three new design algorithms for jointly optimizing source and channel codes. Our optimality criterion is to minimize the average end-to-end distortion. For a given channel SNR and transmission rate, our joint source and channel code designs achieve an optimal allocation of bits between the source and channel coders. Our three techniques include a sourceoptimized channel code, a chann...

We obtain the Shannon capacity region of the downlink (broadcast) channel in fading and additive white Gaussian noise (AWGN) for time-division, frequency-division, and codedivision. For all of these techniques, the maximum capacity is achieved when the transmitter varies the data rate sent to each user as their channels vary. This optimal scheme requires channel estimates at the transmitter; dy...

We advocate using performance bounds to guide code optimizations. Accurate performance bounds establish an efficient way to evaluate benefits as well as overheads of code transformations without actually performing instruction scheduling. In this paper, we introduce a novel bound-guided approach to systematically regulate code size related instruction level parallelism (ILP) optimizations inclu...