I. INTRODUCTION

II. OPTIMIZATION PROBLEMS IN WIRELESS COMMUNICATIONS: STRUCTURES AND CHALLENGES

III. STRUCTURED NONCONVEX OPTIMIZATION

IV. PROBLEM-SPECIFIC GLOBAL OPTIMIZATION

V. OPTIMIZATION IN DISTRIBUTED NETWORKS

VI. OPTIMIZATION VIA LEARNING

VII. LEARNING-BASED OPTIMIZATION WITHOUT EXPLICIT CHANNEL ESTIMATION

VIII. OPEN PROBLEMS AND RESEARCH DIRECTIONS

IX. CONCLUSION