This document presents a detailed solution to a Wireless Networks and Communication assignment, addressing key concepts in the field. The solution covers frequency modulation, including calculations for MFSK, and explores 16QAM modulation with constellation diagrams. It also provides a step-by-step explanation of Cyclic Redundancy Check (CRC) calculations for error detection, along with examples. Furthermore, the assignment delves into Direct Sequence Spread Spectrum (DSSS) and its implementation using PN bit streams, and discusses the advantages of hexagonal cell structures in wireless network design and planning, referencing relevant research papers. The document offers a comprehensive understanding of various modulation techniques and network concepts.