Wireless communication has encouraged the practice of optimizing performance in wireless networks to achieve higher data rates and network coverage for the end user. These strategies and methods will be examined to verify their validity and to introduce future solutions to the limitations of wireless communication systems. Wireless communication performance is affected by channel attenuation, path loss, and interference. There are several techniques that can be used to avoid signal degradation. At short distances, a transmitter-receiver pair is able to achieve a quality connection. However, relay networks have become a popular strategy for transmitters and receivers that have been separated by large distances or large obstacles in the path. Relays are used to retransmit the signal with or without re-encoding it. Cooperative communication extends coverage and reduces transmission power by using spatial diversity. Distributed coding is a cooperative technique that allows multiple antennas to work together to transmit information. Specifications for these different networks can be a difficult task. There are different configurations and compromises of relays. The present design process for relay networks is constrained by the drawbacks of the wireless channel. Strategies using multiple input-multiple output (MIMO) overcome many of the problems inherent in wireless transmission and have become widely popular. The research will illustrate the benefits of relay systems, MIMO, and other selected strategies that optimize performance in a wireless network. Wireless communication has revolutionized our society. Provides access to communications that are impossible to implement with the use of cables. It allows help... in the center of the card... and the relays can cooperate to transmit to the receiver. The advantage is that the receiver will select the best approximation of the signal. More information can be transmitted if the relays receive and transmit on different channels or duplex. Other forwarding schemes try to improve network coverage by sending a message across multiple nodes. The design process goes even further by selecting different modes of relay operation. Since signal-to-noise ratio is still the current figure of merit for most wireless communication systems, AAF and DAF protocols are assigned to nodes to maintain a quality signal. The variety of functionality of a decoding and forwarding relay far exceeds that of the AAF relay in general because DAF operates at a higher level of signal processing. Finally, the use of multiple antennas has grown rapidly over the past decade.