Grand Mesa

Disclosed are various wireless communication techniques such as: performing asymmetric communication of signals by using orthogonal spreading codes, dynamically allocating resources by transmitting data packets based on monitored uplink status flag (USF), re-transmitting data packets by modulating data over multiple modulation schemes (e.g., M-QAM, M-PSK etc.) etc. The inventions may be implemented as wireless communication techniques for transmitters, receivers etc.