A home wireless signal can be boosted by getting a better multiple-antenna router, removing obstructions in the router's path, using a booster antenna or installing an extender. Switching the wireless channel to a faster, stronger channel such as 5GHz, can also boost a home wireless signal.
Removing other wireless obstructions improves wireless signal, as does replacing the router's antenna with a high gain version. While boosters make the existing wireless antenna more powerful and directional, extenders or repeaters pick up wireless signals and boost and rebroadcast them. Configuring high-level router security prevents freeloaders from stealing your bandwidth, thereby boosting wireless capabilities.