Signals and Systems (International Edition) [Paperback]

The book is an excellent basic introduction to the subject. It takes what can be a very difficult subject for students and provides a relatively clear path through the material. It doesn't assume very much mathematical background in the sense that there are plenty of very elementary problems in chapter one to remind you of the basics that you need for the rest of the book. Obviously if students have trouble with these problems they need to consider additional study to fill in some of the gaps in their knowledge on the mathematics side.

The worked examples in the chapters are excellent, although sometimes you have to ask yourself what you are supposed to be learning from each example or end of chapter problem. The first 20 problems at the end of each chapter really cover the chapter material, and subsequent problems delve into the material in a little more depth or in relation to more real-world problems. If you understand the chapter you should have no great difficulty in doing the first 20 problems in each chapter, and the answers are provided to help you make sure you aren't missing the point. I found some of the other problems a little less clear, and certainly the students had difficulties here. I provided well over a hundred pages of written solutions for my students to try to overcome this deficiency.

There is a solutions manual, but I don't recommend it all that highly. I found quite a lot of basic mistakes in the solutions manual. Several problems seemed to be done the "wrong way" compared to what I think the intention of the problem is. Also, some of the solutions in the solutions manual don't give enough guidance to students (at least not to the students I had in my course, and most likely not to many others judging by sorts of comments I've read in reviews here). On the other hand, I've probably made similar sorts of mistakes with the solutions I've provided, so I guess I can understand why the solutions manual has these deficiencies.

A few of the end of chapter problems (very, very few) didn't seem to have much point. Some seemed to involve a lot of work, for not much instructive gain. However, the large majority of problems are excellent and highly instructive.

As with all books there are possibly things which could be improved, but overall this book is excellent in terms of being a good basic introductory text for a Signals and Systems course. Such a course is something that many students are going to find difficult, but the book isn't to blame if that's the case.

A few comments on the latter: it seemed to me that the first 20 basic exercises at the end of each chapter were very basic, of the type "plug-in the formula from the table on the previous page", while the subsequent problems, especially the advanced ones, are way above the level of the former. Working out through those was meticulous, hard and very lengthy as compared to the basic stuff (the solutions provided by our instructor were of the order 1-2 typed pages per problem). Providing answers or at least general strategies would have been tremendously helpful. I am aware that there is a solutions manual, however the textbook itself is expensive enough.

The information was presented clearly, but I liked our professor's introduction to convolution more that the book's coverage. The sampling chapter was, at least to me and some of my fellows, a bit confusing and we had to, again, rely more on class notes.

Overall this is a good book, albeit very-very expensive (I was lucky enough to get a cheap Indian reprint).