Design and analysis of linear precoders under a mean square error criterion, Part II: MMSE designs and conclusions

✍ Scribed by Jonathan H. Manton

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 250 KB
• Volume: 49
• Category: Article
• ISSN: 0167-6911
• DOI: 10.1016/s0167-6911(02)00317-1

✦ Synopsis

Part I of this two-part paper formulated the precoder design problem as an optimisation problem and solved it with respect to a worst case criterion. Part II studies a similar optimisation problem but with respect to a criterion measuring average performance. A stochastic optimisation algorithm is proposed for solving this problem. For special cases, closed form solutions are also given. These results indicate linear precoders reduce the e ects of frequency distortion caused by multipath channels but are powerless to counteract additive white Gaussian noise. The conclusion is linear precoders should introduce only a small amount of redundancy and be used in conjunction with an error correcting code capable of combatting additive noise.